Hiding tracks in ReaScript doesn't update visually?

I created a ReaScript action to duplicate a track and hide the original, using the following commands RPR_SetMediaTrackInfo_Value(TrackID, "B_SHOWINTCP", False) RPR_SetMediaTrackInfo_Value(TrackID, "B_SHOWINMIXER", False) ...but it seems that, although the track does get hidden, Reaper doesn't realize it's hidden until I change a value in the Track Manager. IE, when I use the action, the track stays visible, but Track Manager tells me it should be hidden, and if I click something in Track Manager, it suddenly updates to the visibility it should have. Is this a bug, or do I need to use another command in ReaScript to update things?

Try RPR_TrackList_AdjustWindows(False) Code:

RPR_UpdateArrange() is sometimes needed when modifying item lengths/selections etc. and RPR_UpdateTimeline() is for refreshing markers/ruler, for example.