Sometimes won't let you click on villagers with professions to see trades.

When you try to click on a librarian or a farmer it sometimes wont let you see the trades. You have to put down a lectern or composter beside them to see it, very annoying. It will show the trade for a split second but you cant actually trade with them. In the picture  I just right clicked with my pickaxe as you can tell because it went below the screen and the trades didn't open.