When using Pan behind tool, check cursor position when mouse is released
When using the pan behind tool, if there's a lot going on and the computer is running a little slow, upon letting go of the click to set the anchor point, you have to keep the mouse still for a second so that AE registers that the point is set. If you move the mouse too soon, then, although you've let go, the anchor point still moves with the mouse and sets it in the wrong place.
I remember years ago, this wasn't an issue. But at some point this bug was introduced and has never been fixed. Whenever it was, it was changed to set the anchor point to the position of the mouse cursor when the software finished its render cycle, rather than checking where the mouse was positioned when the left-click was released.
It's such a common issue - I think I've set an anchor point correctly, then realise that it wasn't. It'd be wonderful if this could get fixed again.
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Mike Choo commented
The pan behind tool does have an element of lag, especially between releasing the mouse/stylus and the new anchor point position being committed. This is particularly noticeable when using a graphics tablet as an input device.
I use this tool a lot when rigging characters, and have multiple times in the past not noticed that the anchor has 'continued' to move after I released the button, and ended up with the anchor a long way from where I thought I'd left it because it had moved with the cursor after click release.
This is not limited to the pan behind tool. The timeline also suffers from this. I imagine more visual controls also do.