Since Tixati 3.20, the main tabs are shown overlapping
See screenshot:
https://imgur.com/a/mGma0Jp

What OS?
I run both linux and win7 and have not seen this.
Is v3.21 the first time you had this problem? v3.19 was fine?
maybe post this in the main forum to get more people looking at this.

The failure is not determined by the operating system or paranormal phenomena.
(Link removed by Mod and sent to Devs)
(Error present in Win10 and 11)

The size for the label of these tabs is fixed, as a consequence in other languages the text does not fit inside the non-collapsible tab.
(Link removed by Mod and sent to Devs)
(Comparison of interface behavior in English vs Spanish)

A Spanish proverb: "No hay mayor ciego que quien no quiere ver"
(There is no greater blind than the one who does not want to see)

The solution is simple: make the tab banks resizable, as happens in the main window, which works well.

Plizze -> please repost those last 2 images with all files/filenames blurred.