Instace Tool 1.2.5 update is now live on both Unreal Marketplace and itch.io.
1.2.5
------------------
* Add option to frame viewport to indicate actor or instance selection
* Fix potential editor crash when convert/add instances in 4.17.2
There’s a 4.17.2 specific bug fix for potential editor crash when converting/adding instances. The cause of the bug is that in 4.17.2 render data of instances static mesh component might not be initialized properly (it’s fixed in 4.18).
You might also noticed that in this update, there’s a red/green frame over viewport to indicate whether you’ve selected an actor or an instance.
Actor selected.
Instance selected
The option can be turn on or off in Options panel. Also the frame color can be customized there.