When inputting variables from a fresh start, if allowing each variable to automatically display in the build screen, after entering the 28th variable scratch hits 100% CPU and does not allow any other function apart from exiting scratch via the windows, window 'X' control.
Workaround is to remove some of the existing variables from the display area.
If however two full columns are displayed (28 visible Variables) the 29th variable replicates the same error.
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