(facepalm)
Just because a bug ACTS or LOOKS like another one, does not mean that it has a similar root cause or can be fixed the same way. I vaguely remember there being 1 or 2 bugs that went on for years, last decade, because it looked like one thing, but was actually caused by something different.
To use a real-world example: my car's right low-beam headlight.
It looked burnt out. It acted burnt out. Something I've dealt with a dozen times with almost as many cars over the years.
But, on replacing it, the headlight worked for a few trips, then stopped working. I'd take the car to get it checked, and the light worked for the mechanic looking at it, first try. It would work for a few more hours/days, then not work.
It took me weeks to figure out that it's a wiring problem, instead of the "obvious" incorrect diagnosis of a bad bulb (and who knows how long the headlight was out before someone told me, as the fog lights gave the false impression I head a headlight that side, and brights worked normally).