Firefox select2 mobile bug: review other instances

We got hit by https://github.com/select2/select2/issues/5457 which leads in the selection being off by one.

I've worked it around in 97a1ff50 for one element.

We need to look if this affects other elements as well (using select2 + ajax search + dropdowns)

• Look in toolkit
• Look in all apps

changed the description

changed title from Firefox select2 mobile bug to Firefox select2 mobile bug: review other instances

mentioned in commit 9b7321ec

Fixed the other two places

closed