if there's a streetcar or two holding with their four way hazard lights flashing eastbound on Dundas between Munro St. and Broadview, then yes it's a problem as not a single vehicle can get past them. If there's no streetcar holding between Munro and Broadview there's no problem whatsoever, with streetcars, automobiles and bicycles moving along perfectly well. I've experienced this three times so far in the last week or so, on Saturday there were three streetcars with their four ways flashing just sitting there, and cars on Dundas were backed up to before Sumach.
The fix is easy. Tell the operators they are under no circumstances outside of emergency or mechanical breakdown to hold between River and Broadview. Same as you wouldn't hold a streetcar in the middle of an intersection. Hold somewhere else, maybe on Broadview, or on Dundas before the separated bike lane brings Dundas down to one lane. Don't get me wrong, I'm loving the Dundas bike lane, it's just the poor operational planning at the TTC that's frustrating.