I am not sure whether this is a bug but at this time timecode is not applied to bounced clips/regions (menu: Audio/Bounce selection). It also would be nice to have similar options as during mixdown (bitdept, naming etc) with bounce selection.
Also discussed in this thread: https://www.steinberg.net/forums/viewtopic.php?f=240&t=92007&p=512922#p512922
Tnx.