No, I'm not aware of anything changing in this area. Though to be honest I'm kind of surprised that running specific tests used to work. I always thought that was unsupported and recommended folks pass in directories instead. Here is the function responsible for filtering tasks by path: https://searchfox.org/mozilla-central/rev/43450868e9f3e26da88a02837e5a43c93728ea95/tools/tryselect/tasks.py#166 It does look like there was a substantial refactor to it back in June, so maybe that was the regression? This was bug 1898051
Bug 1917819 Comment 2 Edit History
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No, I'm not aware of anything that I'd expect to cause this. Though to be honest I'm kind of surprised that running specific tests used to work. I always thought that was unsupported and recommended folks pass in directories instead. Here is the function responsible for filtering tasks by path: https://searchfox.org/mozilla-central/rev/43450868e9f3e26da88a02837e5a43c93728ea95/tools/tryselect/tasks.py#166 It does look like there was a substantial refactor to it back in June, so maybe that was the regression? This was bug 1898051