Villager not giving items after trade and keep glitching

The villager I traded with used to be a zombie villager, I found him at night. I turned him to a villager and got him to master level pretty quick. When I traded with him, the items seems to be glitching. I traded 1 emerald for 16 arrows but the it wouldn't give me the items. I originally have 44 arrows and whenever  i trade trade with him my arrows goes up to 60 then back down to 44 again. This just keep happening every time I try trading with him.