microsoft jigsaw is now displaying too large..

This update is terrible, I always play grandmaster and its a nightmare! Plus my fave background is gone.

I completely agree with you!  As it turns out, the latest update (as of Tuesday, 9/8/20), broke the game again so that the pieces are too large to play in the "daily" games.  I'm still having issues doing puzzles with more than 100 pieces for the regular puzzles due to insufficient table and "drawer" space limitations.  At this point, Microsoft just needs to FIX THIS GAME!

This truly helped the problem, but pieces are still too large. After playing for a while I feel that we have lost about a fourth of our working area.  While it is usable it sure would be nice if they increased our working area. I barely have enough room to put together a "Master" puzzle. I haven't tried, but I think it would be impossible for me to put together a "Grandmaster".

To those who still have the issue, I followed Cassandra's recommendation to search for updates.  Ironically, it was my "phone" that needed an update on my laptop; have no idea why.  However, once it downloaded and installed that update to my laptop, it has corrected the problem. 

I would still like to know why my "phone" was updated on my laptop, since the two devices are completely separate.

Cassandra, it's the latest update of the game that caused the problem.  As I said.