RV Screening Room not skipping slate frames

Hi all,
I use Screening Room for RV 2021.1.0 on Windows and Mac to view a sequence of shots. All the Versions have the “Movie Has Slate” attribute checked. However, when I play the timeline, the slates are not being skipped. Via the Shotgrid menu in RV I set the session prefs to play full frame range without slate, I’ve tested when source was set to Movie file and streaming.
However, slates are skipped during playback if I use the web browser version of Screening Room. If I uncheck the attribute then the slates are displayed. Seems the web browser version of Screening Room is taking the correct actions.
Anyone else seeing this issue in RV’s Screening room?