[Issue 15042] [REG2.068] isInstanceOf fails when a template argument is an instance of the tested template

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15042

--- Comment #1 from Marco Leise <Marco.Leise at gmx.de> ---
Digger traced it down to this pull request for #14290:
https://github.com/D-Programming-Language/dmd/pull/4499/files#diff-0477a1d81a6a920c99362954179c59c8

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