I always had to set the height of them literally almost 50% taller than the content itself to accommodate for the innards growing when the form was submitted with errors (the error messaging expanded the height). If I didn’t, the submit button would get cut off making the form un-submittable.

Deadlocks are a classic problem in transactional databases, but they are not dangerous unless they are so frequent that you cannot run certain transactions at all. Normally, you must write your applications so that they are always prepared to re-issue a transaction if it gets rolled back because of a deadlock.