Unexpected folder appearing in Bookmarks; name "Avast Bookmarks".

[SlayerGames44]

So, I opened up Avast Secure Browser and this folder just randomly appeared in my Bookmarks. It just has my Bookmarks and three other websites which are supposedly "saved from mobile devices", even though I've never used Avast products on my mobile devices...
What is happening here?

{
   "checksum": "d78312d8481a349189670c92bf20f4b2",
   "roots": {
      "bookmark_bar": {
         "children": [ {
            "date_added": "13191981737660904",
            "id": "5",
            "name": "Wiktionary, the free dictionary",
            "type": "url",
            "url": "https://en.wiktionary.org/wiki/Wiktionary:Main_Page"
         }, {
            "date_added": "13213989624538678",
            "id": "6",
            "name": "IED",
            "type": "url",
            "url": "http://www.interlingua.com/ied/cerca"
         }, {
            "date_added": "13214242903427472",
            "id": "7",
            "name": "Reverso",
            "type": "url",
            "url": "https://context.reverso.net/traducao/"
         }, {
            "date_added": "13213988084935971",
            "id": "8",
            "name": "Wikipedia",
            "type": "url",
            "url": "https://www.wikipedia.org/"
         }, {
            "date_added": "13192007039364024",
            "id": "9",
            "name": "YouTube",
            "type": "url",
            "url": "https://www.youtube.com/?gl=BR&hl=pt"
         }, {
            "date_added": "13212033042716190",
            "id": "10",
            "name": "Twitter",
            "type": "url",
            "url": "https://twitter.com/"
         }, {
            "date_added": "13212461394950404",
            "id": "11",
            "name": "Reddit",
            "type": "url",
            "url": "http://reddit.com/"
         }, {
            "date_added": "13213987598203896",
            "id": "12",
            "name": "Gmail",
            "type": "url",
            "url": "https://accounts.google.com/b/0/AddMailService"
         }, {
            "date_added": "13213987598205028",
            "id": "13",
            "name": "Maps",
            "type": "url",
            "url": "https://maps.google.com/"
         }, {
            "date_added": "13214351456806923",
            "id": "14",
            "name": "Logeion",
            "type": "url",
            "url": "https://logeion.uchicago.edu/"
         }, {
            "date_added": "13214351772044914",
            "id": "15",
            "name": "Latin -> English",
            "type": "url",
            "url": "https://www.latinitium.com/lewisshort"
         }, {
            "date_added": "13214102639307488",
            "id": "16",
            "name": "English -> Latin",
            "type": "url",
            "url": "https://www.latinitium.com/smithhall"
         }, {
            "date_added": "13214276496582663",
            "id": "17",
            "name": "Adumbratio",
            "type": "url",
            "url": "http://neolatinlexicon.org/adumbratio"
         }, {
            "date_added": "13214359169324533",
            "id": "18",
            "name": "Gaffiot",
            "type": "url",
            "url": "file:///C:/Users/mcsla/OneDrive/Documentos/PDF's/Gaffiot%20Dictionarium%20Latinum%20&%20Gallicum.pdf"
         }, {
            "children": [ {
               "date_added": "13191981737660904",
               "id": "23",
               "name": "Wiktionary, the free dictionary",
               "type": "url",
               "url": "https://en.wiktionary.org/wiki/Wiktionary:Main_Page"
            }, {
               "date_added": "13213989624538678",
               "id": "24",
               "name": "IED",
               "type": "url",
               "url": "http://www.interlingua.com/ied/cerca"
            }, {
               "date_added": "13214242903427472",
               "id": "25",
               "name": "Reverso",
               "type": "url",
               "url": "https://context.reverso.net/traducao/"
            }, {
               "date_added": "13213988084935971",
               "id": "26",
               "name": "Wikipedia",
               "type": "url",
               "url": "https://www.wikipedia.org/"
            }, {
               "date_added": "13192007039364024",
               "id": "27",
               "name": "YouTube",
               "type": "url",
               "url": "https://www.youtube.com/?gl=BR&hl=pt"
            }, {
               "date_added": "13212033042716190",
               "id": "28",
               "name": "Twitter",
               "type": "url",
               "url": "https://twitter.com/"
            }, {
               "date_added": "13212461394950404",
               "id": "29",
               "name": "Reddit",
               "type": "url",
               "url": "http://reddit.com/"
            }, {
               "date_added": "13213987598203896",
               "id": "30",
               "name": "Gmail",
               "type": "url",
               "url": "https://accounts.google.com/b/0/AddMailService"
            }, {
               "date_added": "13213987598205028",
               "id": "31",
               "name": "Maps",
               "type": "url",
               "url": "https://maps.google.com/"
            }, {
               "date_added": "13214351456806923",
               "id": "32",
               "name": "Logeion",
               "type": "url",
               "url": "https://logeion.uchicago.edu/"
            }, {
               "date_added": "13214351772044914",
               "id": "33",
               "name": "Latin -> English",
               "type": "url",
               "url": "https://www.latinitium.com/lewisshort"
            }, {
               "date_added": "13214102639307488",
               "id": "34",
               "name": "English -> Latin",
               "type": "url",
               "url": "https://www.latinitium.com/smithhall"
            }, {
               "date_added": "13214276496582663",
               "id": "35",
               "name": "Adumbratio",
               "type": "url",
               "url": "http://neolatinlexicon.org/adumbratio"
            }, {
               "date_added": "13214359169324533",
               "id": "36",
               "name": "Gaffiot",
               "type": "url",
               "url": "file:///C:/Users/mcsla/OneDrive/Documentos/PDF's/Gaffiot%20Dictionarium%20Latinum%20&%20Gallicum.pdf"
            }, {
               "children": [ {
                  "date_added": "13149050301730972",
                  "id": "38",
                  "name": "History",
                  "type": "url",
                  "url": "https://mobile.seuhistory.com/noticias/os-cinco-milagres-mais-polemicos-da-historia"
               }, {
                  "date_added": "13149053246221704",
                  "id": "39",
                  "name": "Fastest Square Root Algorithm - Mathematics Stack Exchange",
                  "type": "url",
                  "url": "https://math.stackexchange.com/questions/296102/fastest-square-root-algorithm"
               }, {
                  "date_added": "13167021392462895",
                  "id": "40",
                  "name": "Capitalismo ideal: Você tem duas vacas.... Felipy Vasconcelos",
                  "type": "url",
                  "url": "https://www.pensador.com/frase/NzI4MTY5/"
               } ],
               "date_added": "13214709843000984",
               "date_modified": "0",
               "id": "37",
               "name": "Favoritos de dispositivos móveis",
               "type": "folder"
            } ],
            "date_added": "13214709842999887",
            "date_modified": "0",
            "id": "22",
            "name": "Marcadores do Avast Secure Browser",
            "type": "folder"
         } ],
         "date_added": "13214709291848970",
         "date_modified": "0",
         "id": "1",
         "name": "Barra de favoritos",
         "type": "folder"
      },
      "other": {
         "children": [  ],
         "date_added": "13214709291848987",
         "date_modified": "0",
         "id": "2",
         "name": "Outros favoritos",
         "type": "folder"
      },
      "synced": {
         "children": [ {
            "date_added": "13149050301730972",
            "id": "19",
            "name": "History",
            "type": "url",
            "url": "https://mobile.seuhistory.com/noticias/os-cinco-milagres-mais-polemicos-da-historia"
         }, {
            "date_added": "13149053246221704",
            "id": "20",
            "name": "Fastest Square Root Algorithm - Mathematics Stack Exchange",
            "type": "url",
            "url": "https://math.stackexchange.com/questions/296102/fastest-square-root-algorithm"
         }, {
            "date_added": "13167021392462895",
            "id": "21",
            "name": "Capitalismo ideal: Você tem duas vacas.... Felipy Vasconcelos",
            "type": "url",
            "url": "https://www.pensador.com/frase/NzI4MTY5/"
         } ],
         "date_added": "13214709291848989",
         "date_modified": "0",
         "id": "3",
         "name": "Favoritos de dispositivos móveis",
         "type": "folder"
      }
   },
   "version": 1
}

[SlayerGames44]

Just realized they're imported from Chrome.

[Ekaterina Bayushkina]

Hi!

thanks for this information! It looks like these bookmarks were imported from your default browser - this option is enabled by default during the installation process, so, I suppose, you did not disable this option during installation, that is why bookmarks were imported