https://bugs.winehq.org/show_bug.cgi?id=38462
--- Comment #1 from Nikolay Sivov bunglehead@gmail.com --- What happens is that execScript() doesn't touch returned variant at all; jscript will set it only if SCRIPTTEXT_ISEXPRESSION is specified, which is not a case here. I tried with NULL argument and it uncovered another problem - wine accepts it while execScript() fails on windows.
This needs more tests to see what execScript() returns in this variant.