Printing defaults to #10 envelope

I recently used my contact list to print a label for an envelope #10.

After this, all my print jobs came out using a default for the envelope despite the fact that printer settings were set to letter.

I managed to fix this problem after many trial and errors. I removed the printer (HP laser) and cleared the library cache, I reinstalled the HP smart airprint app. Nothing worked until I checked the settings on the actual printer. The paper tray 1 was set to envelope! After resetting the paper tray setting to letter, everything worked fine.

Hope this helps someone.