@Clownish, again to remind you (and any readers) how important it is to describe your problem or situation as fully as possible. Had you been specific about UALinux instead of Ubuntu.... you might have saved a lot of head-scratching (and lost sleep!). But happy that your solution was found. You...
To begin with I did install a few other bits. VLC, Audacity, and Steam. Since the clean install I tried using only Chromium as a test but the problem persists. To make matters worse I just had a power cut and its now booting in the default Gnome DE. I have since sorted that out and it's all good...
Right I'm away from the grindstone and dead set on trying to help you guys help me!
df: /run/user/1000/doc: Operation not permitted
Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 3.6M 1.6G 1% /run
I added some programs to favourites on the dash to panel and removed some (atm I'm just trying with chromium to add and Firefox to remove) and if I log out or restart they all revert to the default programs when first installed. I've just reinstalled the OS, let it update, and it's still doing...
Using Ubuntu 20.04.2 LTS
Desktop Settings that reset are taskbar favourites, they all set back to the defaults
Installed on hard drive
Edit: Extra internal HDDs need to be mounted every boot too. Not sure if these problems are related.