I put Fire Aspect on a diamond sword to kill a huge slime, but was not set on fire, tested with varying swords and axes.
Linked issues
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If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.
... but the search function does work. Please, copy/paste the title of your ticket into the search bar and see the results. There're several dublicates of this, MC-29748 is the valid one.