Yeah, yeah… 
Linear mode is kinda’ dangerous when working with the Score Editor. For instance, if you use “Build N-Tuplet” a lot and you accidentally modify the Tempo Track while the Layout’s track is on Linear mode, Cubase will/might crash at PDF export (when you print). This is why I created this feature-request:
The reason I created the topic is because the events generated by the “Build N-Tuplet” window are problematic (when doing some strange operations). I might be the only one performing unusual tasks like altering the tempo track in order to change how the notes are displayed in the Score editor, i.e. switching:
→ to a 3:1 ratio (quarter notes → dotted half notes)
→ or a 1:3 ratio (quarter notes → 8th note triplets)