RegularJogger
I had those ALL:
"keyboard language indicator/switcher
keyboard lock keys indicator
budgie menu
icon task list
systray, network, volume (sorry, don’t remember if these are separate or not)
notifications
clock
raven trigger"
I'm sure of that. Considering what I had more, it's not surprising though that those were installed.
Hopefully people will be able to find the culprit if any.
Also had telegram, terminal, software center (default), firefox (default), rythmbox (defaults) and celluloid (default) and also thunderbird and launch nemo (default) if not noted, discord, battery (default?) - with battery percentage (non default to show), element, budgie screenshot/other type of budgie screenshot, probably geany, possibly gimp who knows maybe vlc (probably not this time), or lutris (probably not this time), gedit, could be calculator, and many things which should not be there probably. (temperature of cores from budgie, celtic magic from budgie, virtualbox, steam, system settings, showtime from budgie, maybe contrast from budgie maybe show desktop from budgie, don't remember what else) also, status and user indicator (both are probably default), but I thought it was not (and had not) gnome extensions. order is random since I try to recall and edit rapidly.
As said before, could be I've made an error...
As also said, I can't know the list and not having that installation anymore.
Used: laptop, budgie, luks (not using now), LVM (not using now). Intel. If needed will elaborate but as one other commented it might not likely to help much now since I don't know the origin of the issue (me/not me etc) and while it works great now on a newly installed and vanilla upgraded system and previously not, I did change the installation much.
Panel issue (no icon and - ) /unknown mouse issue (can't click/be captured anywhere) as noted. Faintly recalling not the first time I see a similar thing, but this time it was the worst and not in a specific context and couldn't do anything beside moving the mouse cursor or cold boot, I think, after logging in, and even cold restart didn't help.
Can no longer troubleshoot as noted - not same installation and now things are OK.