Disk space overused without doing anything

[jammerdan]

How can such overusage happen?

[Screenshot_2022-04-07_080059] I read here that overusage may be displayed when allocated disk space is reduced and data not yet deleted. But this is not the case here it is more the opposite, I kept increasing disk space by demand. I never decreased it. This is worrying because if I allocate certain amount of disk space it should not get inflated suddenly. What if there was no more space left on the disk?