Find and Replace functions in Scapple

Two situations regularly lead to this problem:

  1. I create a large Note; or
  2. I paste a significant amount of text into a Note.

In both cases, I need to perform “Find and Replace”. This begins as expected, but when seeking a second word or phrase, Scapple locks up. I have to free it via Task Manager. On reopening the Scapple documents, there appears to be no loss of data in the Note on which I was working.

Unfortunately, this issue repeats itself when I try to continue with the “Find and Replace”