No visual cue something is happening when debugging long running task

[tanhakabir]

Testing microsoft/vscode#133905

When a function is expensive and I'm in debug mode, there's no visual cue that the notebook is still running and working. The spinner doesn't spin and nothing animates on the notebook UI. The yellow highlight disappears too.

[roblourens]

I guess if the cell is running but you haven't been paused for awhile, we could show the animations?

[tanhakabir]

what does this mean?

but you haven't been paused for awhile

[DavidKutu]

It means the cell is taking long to run, and nothing is meant to happen while debugging until we hit a breakpoint and pause there.

[tanhakabir]

ah I see, yeah I think some animation while paused would be nice!