I would use the feedback button but that does not work, and has not done so for a ling time so may be get a developer to get this problem fixed first before tinkering with other parts of the software that were working fine. Not that anyone will take any notice but here are my thoughts.

I don't think the problem is the width of the boxes, its the two column layout within the dropdown box when  entering a product which makes the dropdown box look narrow and does not show the full text. Saying that it does show, but not on one line. The two column layout of the dropdown box should be a two lines of text not crammed in side my side.