It’s opening your footage in the layer panel (which is a very important technical difference from being a second composition window). It lets you control things like masks and paint strokes regardless of the layer’s transformations and effects in the composition.
So, it is useful, but not for you compared to the annoyance of it happening inadvertently so frequently!
Now, there is a preference to change whether it opens in the layer panel or the source footage panel, but not one to disable the double-click functionality entirely.
You could make a request over at the After Effects uservoice page (found here: https://adobe-video.uservoice.com/forums/911311-after-effects ) and maybe they’ll add that functionality. In the meantime, you might consider adjusting the double click speed in your Wacom settings to be a lot faster. I basically don’t double-tap at all to get a double-click, but instead use the button on the pen to activate the double-click functionality.
– The Great Szalam
(The \’Great\’ stands for \’Not So Great, in fact, Extremely Humble\’)
No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.