Nice to see someone that used HeidiSQL. I'm on the same boat. It feels like an abandoned project. I guess it's finally time to install DBeaver and say goodbye to Heidi.
HeidiSQL feels like a finished product to me. Really no complaints at all and if you actually take a look at the commits, you'll see that the SINGLE developer puts in a whole lot of effort.
https://github.com/HeidiSQL/HeidiSQL/commits/master
The guy is great and calling the project abandoned is really not fair.
I'm not sure if it is just an issue with my machine, because others in my office still use Heidi and don't report the bugs I am having. Small as they are, they got annoying enough for me to start seeking alternatives. I would still recommend people giving Heidi a spin if they've never tried it.