With multiple selection, you have to wait before clicking on key object
Illustrator CC 2018
Windows 10
With a multiple selection, if the last object you click is the one you want to align to, you have to wait a little bit before re-clicking to set it as key object, otherwise it will go into Isolation mode or Symbol edition mode (if it's a Symbol).
![](https://secure.gravatar.com/avatar/936df9d202cc5bf0867e69136fd1b68f?size=40&default=https%3A%2F%2Fassets.uvcdn.com%2Fpkg%2Fadmin%2Ficons%2Fuser_70-6bcf9e08938533adb9bac95c3e487cb2a6d4a32f890ca6fdc82e3072e0ea0368.png)
You can tweak the double click speed in Windows settings or disable 'Double Click To Isolate' option in Illustrator’s Preferences > General.
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Welcome back :)
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Stéphanie Noverraz commented
Thanks Egor.
Could have been that, I can't say because I'm back on a Mac now and it's working fine. :) -
Stéphanie, it’s because the Windows settings for the speed of double click. If you make the allowed pause shorter, Ai will stop misfiring Isolation mode — but it’d be harder for you to double-click elsewhere.
I personally suffered from this for a while, before I realized I can tweak it, since I'm fast enough to do quick double-clicks... and also I learnt to wait a bit before setting a key :)As a workaround you can disable 'Double Click To Isolate' option in Preferences > General.