If you look at the data given by translation memory:
The source texts contains <tvar> statements instead of $foo. This causes the more accurate suggestions get worse match than some less accurate suggestions, highly visible when translating the tech news.
Version: master
Severity: normal
Change 145770 had a related patch set uploaded by Nikerabbit:
Store translatable page translation units in variable form
Change 145770 merged by jenkins-bot:
Store translatable page translation units in variable form
For anyone encountering this bug, the merged patch does not retroactively fix already marked pages, unless they are remarked for translation.