Revit crashes (fatal error) while moving some tags. We could not figure out the reason behind this. We updated the drivers, switched the hardware acceleration on / off; open GL on / off. didnt help.
The workaround we do is to switch off the leaders before moving the tag.
Working on the main view (as compared to working on dependent view) also does not fatal errors.
We encourage users to insert the tags without leaders to begin with!