Despite trying everything I can, I can't get this glitch to happen for me. There must be more to it than just what you're saying. Can you provide the exact steps to reproduce this glitch in the support section? E.G. what items do you buy, how long do you wait, etc.
Depends on the type of items you were holding. Most things should drop by your feet, except for a few items that don't save by default in the base game, (such as spray cans).