Note: I have written this post multiple times, but the website keeps kicking me out and asking me to login even though I already am… Sorry if the question seems quite half-■■■■■ 
Tl;Dr: Have tried reinstalling, rebooting, recompiling/building, remaking projects, re-reing, re everything. To no avail.
glxinfo | grep “OpenGL version” returns “OpenGL version string: 3.0 Mesa 18.1.0-devel - padoka PPA”
Keep running in to issues like this:
and229305-
Thanks in advance for any help.
Oh, and feel free to ask for any more info, I understand this post seems quite basic and shortened.
Super-quick-ninja-edit: I’m using Ubuntu 17.10.