Peter

The same problem was discribed earlier The author prepared a patch. You can find it here

If I understand correctly, the problem described here is similar to #188. It appeared starting with version 24.2.5.2. TexMaths 0.52.2 solves this problem. Thank you, Roland Baudin.

TexMaths is not compatible with either snap or flatpak. Ubuntu now has version 24.2.4.2 in deb. That is why you had the opportunity to install this extension. But from 24.2.5.2 it is unlikely to be installed in Ubuntu. I also solved the problem in a somewhat unusual way. Since this was a fresh install, I reinstalled Fedora. Without updating, installed the extension. And only then updated the entire package base of the distribution, including the office, to version 24.2.5.2.

Failed to install TexMaths 0.52.1

Oh, thank you very much. It works. The question is closed. P.S. My Cyrillic is Ukrainian, not russian. Technically, of course, it doesn't affect anything, but...

Oh, thank you very much. It works. The question is closed. P.S. My Cyrillic is Ukrainian, not russian.

Oh, thank you very much. It works. The question is closed. P.S. My Cyrillic is Ukrainian, not Russian.

Cyrillic characters in formulas are not displayed