Hmmm that shouldn’t be happening… Just so the dev’s know, what version of the engine are you using (and built from source or pre-compiled)?
might be something to report as a bug on AnswerHub if you can get it to reliably do with the setting turned on. It seems to work properly for me in 4.5.1, but it could also be due to the type of asset you have open (or possibly only with large or complex BP’s/Materials), hard to say.