Strange "ghost" cursor appears after clicking in document Mac OS

Hello and greetings from Sweden. I am using Libre on a MacBook Pro M3 machine, the silicon version; In edit view “edit mode” is enabled. Formatting marks, boundaries or show trace in view is not enabled.

When I write text all is fine but when I click to move the cursor to another location there will be like a thin cursor leaving a “mark” in the document. If I click around there will be more of them. Hiding the window in Finder, and showing it again, seems to make these graphics disappear. Any idea on solution on this?