Plasma 1 allowed users to resize dialogs with the min/max range for a given axis by pulling on a corner. This appears to be no longer supported in Plasma Next; I think it'd be worth adding back. See bug 334923 for a use case. Reproducible: Always
Sorry, I screwed up my search query and didn't realize this was already reported. *** This bug has been marked as a duplicate of bug 332512 ***