This behaviour, where the focus was happening on a small asynchronous
delay, was added in commit 933189b92 late last year in a commit with
no supporting tickets or commit message explaining what the change
was trying to accomplish. This commit has effectly been reverted within
this commit, since it caused a regression in how focus was being
assigned that made it inconsistent with a standard `<select>`.
A test was added for this which ensures that we won't see that
regression again.
Fixes#5532Fixes#5185Closes#5552
