Blazes, And fire resistant mobs are not being pushed by lava in the Windows 10 Bedrock Update 1.16.1. I did the exact test in the Java version and things worked as expected.
MCPE-89106
Entities not being pushed by flowing lava.
Resolved
Duplicate
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We're tracking this issue in MCPE-75124, so this ticket is being resolved and linked as a duplicate.
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