spray pumps

just wondering about something I’ve experienced twice in a week-

what’s going on with the spray pumps found on glass cleaner, 409, etc.

Two on different products have stopped working after only moderate use, you squeeze it, and some product comes out, but the trigger sticks in the in position.

You can free the trigger, but the plunger remains stuck. Is it me, or is someone going cheeze on thier QC?