When I do a search in the issue navigator I no longer have visual feedback that a search is happening

When you're doing searches in advanced mode in JIRA issue nav you used to get visual feedback that a search is happening (grey overlay) and a throbber used to appear? Over the last month this has gone a way and it's really frustrating as you think when you hit "enter" it's done nothing... so you hit enter again and again.. and then realise it was trying to do something

Seems like a recent regression