[imtringued]

>Whether or not that's the correct decision, it's not an inconceivable design.

It's easy to imagine. Someone kept a variable for the current selection and instead of copying it during the enter event they just read it when the delayed action happens. It often takes time for a second window to open or a page to load. If that new window references the current selection you are going to run into bugs.

It's a design that has caused many video game exploits. You can do impossible things like disassemble a Fat man barrel and put it on a pistol in Fallout. You will get a rocket launcher that has the fire rate of a pistol except it shoots nukes and only uses bullets as ammo.