Edit Mode Bug

Rekordbox Update 6.7.0 : I can't believe, just payed 18€ (more then a couple of months ago) just for having edit mode, and it's bugged !! When you delate/replace/copy/paste etc the waveform doesen't change immediately .. I tried to save and open it again to see if the waveform changed but only the upper waveform (the smaller one) is correct but the biggest one still remain like the original track ... That's so annoying that a platform like this still have bug like this.
PS: I tried to change computer, bug still the same ! Previous Update worked perfectly. 
Disappointed !