I've seen this request posted several times over the years but couldn't determine that it had been addressed, so I'm adding my voice to those who would be most grateful for a config option to suppress the dialog box summarizing the results of the "SHOW WARNINGS" statement.
I can already see any warnings right there in the query log at the bottom of my window, so for me the dialog is just redundant and annoying.
In almost every other respect I've been super impressed with the work that's gone into HeidiSQL, with its versatility, stability and richly configurable UI. Please keep up the excellent work!
Many thanks for listening!