Did the fill tool change recently so you have to uncheck "preserve transparency" in Photoshop?

Recently I've noticed that the fill tool no longer works on layers at all unless you uncheck "preserve transparentcy". Is this just me? I've never had to uncheck that for Shift + F5 (fill) to work. But now it no longer workers in both Photoshop 19 and 20. 

Was there a recent update to PS 19 and the new release of 21.0.1 that changed this behavior?

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