While doing local testing I ran into a situation where the canonical URL meta tag from core was not being overridden by Metatag.
Changing the module weight to 1 resolved the problem.
I wonder if other subtle problems might be resolved if the module weight was 1? Hrm.
What exactly was the situation? Is it something that we can reproduce?
I need to reinstall my dev site, see if I can reproduce it.
Skipping this for now, I think something else may have been interfering.
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