When a user tries to create a workspace and it fails the quota check, the UI does not convey the failure properly: the progress bar keeps cycling, and clicking the Cancel button doesn't make it stop. To get out of this, the user must click another section of the UI (such as Workspaces), and then click back into the failed workspace to get the proper message they should get as soon as it fails about failure due to quota.
Attached is a video of this undesirable behavior.