Seems to be due to very long lines: ~600 and ~900 characters.
The script is not mine, I can't change it (and I can't send it).
The IDE crashes if you scroll over these lines (1 line Down, Page Down) and also if you go directly below (Edition / Go to).

TCC 20.10.32 x64 Windows 7 [Version 6.1.7601]

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