Problem with TriggerEnter/Exit Execution Order

I'm having an odd issue where some of my in-game objects are running OnTriggerExit and OnTriggerEnter in a different order.

For context, I have a number of tools that spawn on two tables, each table with a Trigger collider on it. When the tools enter and exit the trigger collider, I run some code like enabling/disabling gravity on them. (Note that the smaller colliders are "spawn bounds" so the tools aren't hanging over the edge of the trays). When I run a function to randomize the tool order (and swap their positions), some of the tools don't have gravity and start to float upwards! After digging a little, I found that in some cases, the tools were running OnTriggerEnter for the new table, then OnTriggerExit for the old table after it (which is what disabled the gravity on them). I logged that both functions were running in the same frame, but the order was inconsistent. Some tools ran Exit->Enter, while others did Enter->Exit.

Any ideas how to control this behavior so that OnTriggerExit for the old table runs before OnTriggerEnter on the new one?

Unity version is 2019.4.19 if relevant.

Thanks