Question
FM-17.0.0.226 (2022) - Can not re-tab an un-tabbed document
During some tests I accidentally un-tabbed a document (a new one without name).

- I tried to tab it again, but this is not possible. The blue line in the tab area does not appear when moving the free floating document windows over this area.
- Save it with a name did not help
- Close it, and open it again integrated it into the tabs
IMHO this is a bug newly introduced (it does not appear in FM-15, 16) FRMAKER-12519

