If you click on Mate in the installer when selecting desktops, then we will not see its description. We will see a description of Budgie Desktop.
The version of the system in which the bug was found: EndeavorOS_Cassini_Nova-03-2023_R1 (it is possible that the bug exists on all previous versions too, I do not know this)
Might be a problem with the translation.
Definitely a translation issue:
Thanks for reporting it.