Rated 4 out of 5 stars
UPDATE: @revisor so if I follow your directions and go to the folder properties under the 'quota' tab you will see "cPanel Account" as quota reading... which , as you said ... it's likely to be a Hosting Provider setting issue.
btw I'm running 68.5.0 (64-bit) on a mac and there seem to be no other issues
ALMOST!! it is actually picking up my overall server disk usage instead then the assigned mail quota... O_o
AFTER DEV RESPONSE:
Disk quota isn’t the same as my email quota as I limited email quota to 500mb... the account is a hosting of several domains and the emails Quotas are managed to contain disk usage.