I'm very often using the "Create multi column filter" feature to filter the table for the required search phrase. Unfortunately, now and then it happens that I copy and paste a text with trailing spaces or tabs without noticing it. In result I don't find the rows I was looking for until I realize my mistake.
I've been working with HeidiSQL for many years now and also donated for this lifesaver. I've tried to get used to this problem as it's not a bug of course, since it's filtering for the whole input. But no matter how hard I try to keep this in mind, it still happens from time to time that a copied word or phrase has some invisible chars around it. This can be really frustrating.
I would love to have an option that would trim the input automatically when the "Apply filter" button is pressed. I would understand if you don't want to have this as the default behavior, but please add this as an option in the preferences!