The fold/unfold arrows for notebooks are often the wrong and different sizes, this also means that the notebook titles are sometimes indented a different amount, see the picture below.
I initially thought this was only an issue for doubly nested notebooks, but I have since discovered that this is an issue for all notebooks with names too large to be shown.
- Platform: Windows 10
- Platform version: version 21H1 build 19043.1023
- App Version: 5.3.0
- Create a notebook with a short name
- See the fold/unfold arrow be normal size
- Create a notebook with a name a little too long to all be shown
- See the fold/unfold arrow be a bit smaller than the normal one
- Create a notebook with the longest possible name
- See the fold/unfold arrow be even smaller
- Hover over the three notebooks to see the title and arrow move strangely