You can use some CSS to remove them - there are several posts about this in the forum:
What causes these ant lines? - Need help / App Organization - Bubble Forum
How to remove dotted border appearing around groups (bug?) - Need help - Bubble Forum
You can use some CSS to remove them - there are several posts about this in the forum:
What causes these ant lines? - Need help / App Organization - Bubble Forum
How to remove dotted border appearing around groups (bug?) - Need help - Bubble Forum