Version 3.0.2-1 of tbsync is marked for autoremoval from testing on Sat 25 Jun 2022. It depends (transitively) on nvidia-graphics-drivers-tesla-470, affected by #1010884. You should try to prevent the removal by fixing these RC bugs.
Problems while searching for a new upstream version
high
uscan had problems while searching for a new upstream version:
In debian/watch no matching files for watch line
https://github.com/jobisoft/TbSync/releases/ .*/v?(\d+\.\d+(?:-rc\d+)?)\.tar\.gz