telega.el does not seem to work correcvtly in GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0) of 2023-02-23, modified by Debian

[mrkiko]

Debian 11 here. I had to install the elpa-transient package which has become a dependency.
Errors vary - from the telega-server idle function related errors to "telega-bugs" presenting when contact is typing.
Running telega-server in docker, telega was of last commit - 58b4963

Note: for me a version guard, preventing usage of telega with this version of emacs, would be a perfectly fine solution.