Problem: Cannot interact with the tools when more than one Convert to Geodatabase tool is open
When more than one Import to Geodatabase tool is opened at a time, the tools will begin to flicker. It is impossible to interact with either one of the tools. This occurs immediately after closing the Ouput Settings dialog box.
This is a known issue.
Solution or Workaround
Do not open more than one Import to Geodatabase tool at a time.