External script editor resets to "open by file extension" every time I open unity

Target Platforms Desktop
,
1

Hello, I got another question. after this I will hopefully never have to ask about any problem again…

When I open unity after closing the editor I need to go to preferences and change the external script editor. I found one other post with the same problem: External Script Editor resetting to default on restart

The fixes that worked for some people didn’t work for me. The only one I didn’t try was the administrator mode because I can’t find a mode like that on mint.

I can remember it wasn’t always like this (only after a day of use?) I hope someone can help me and the people in the other post.

Thanks in advance!

using:
JetBrains Rider 2024.1.2
Unity (2022.3.30f1) LTS
System Info:
Kernel: 5.15.0-107-generic x86_64 bits: 64 compiler: gcc v: 11.4.0 Desktop: Cinnamon 6.0.4
tk: GTK 3.24.33 wm: muffin vt: 7 dm: LightDM 1.30.0 Distro: Linux Mint 21.3 Virginia
base: Ubuntu 22.04 jammy

2

I’m having the same problem in December 2025. Linux Mint, JetBrains Rider, Unity refuses to save my external editor preference, reverting instead to Visual Studio which I’ve never even installed.