Progress indicator hangs if executed block has an error

[juleswhite]

When executing a block, if an exception is thrown, the diamond progress indicator hangs and animates forever on top of the text. Closing the editor pane and reopening it fixes the problem. This behavior is observed with and without inline display of results.

[wilwade]

I also have issues with the loading indicator not clearing. Is there a way to just disable the loading indicator?