ArcGIS Pro does not display informative error messages when attempting to modify features. When completing simple tasks that don't work or can't run, ArcGIS Desktop would often display a message explaining why a multi-part polygon could not be merged, such as differing z values or geometry errors. ArcGIS Pro however, doesn't do this, it often just sits there and seems to think it exploded the thing, but nothing happens. My troubleshooting process often involves me putting my feature class into desktop, attempting the same workflow and seeing what error pops up, and then being able to find a work around. This is becoming less practical as Desktop gets shelved and it's ability to work with streaming data or features with attachments enabled. I'm hoping error messages in ArcGIS Pro can be improved for easier user troubleshooting.