Game version: Season 5 at least (I think, any previous version since the game launch)
I notice a possible bug when quickly selecting rally point wrongly commands builder villagers to move there. Here is the video to demonstrate the issue I am facing (the possible bug occurs at 0:43).
I am using the building selection hotkey and right-click to set the rally point but why it commands builder villagers to move there? I have faced this issue multiple times. It gets very annoying because often it sends my villagers near the enemy base!
Another example video of the same possible bug.