Timeline scrubbing broken when project window is active while importing some clips or images
With the latest build from this 1.21 branch, I've noticed that importing some clips to project window or straight to timeline messes up the timeline scrubbing indicator WHEN the project window is activated.
Once I activate any other windows such as media browser or effects, it starts to work again. I have never noticed this before, so is this a bug or have been doing something wrong previously. It doesn't happen with all the clips, so it's pretty random.
Here's a screen capture video which illustrates the bug: https://youtu.be/x8fZT4N2AVY