This is specifically about its behaviour with "Minecart Improvements" experiment turned on.
Even with the default speed you will notice that the furnace minecart push speed is slower than what a minecart can achieve on it's own. This can especially be seen at high minecartMaxSpeed values because the push speed stays painfully slow.
Reproduction Steps
Set minecartMaxSpeed to 1000
Build a powered rail track
Place a cart and a furnace cart behind it
Power the furnace cart
Observed Results
The pushed minecart moves much slower than had it not been pushed
Expected Results
The pushed minecart would move just as fast if not faster.
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We're tracking this issue in MC-275291, so this ticket is being resolved and linked as a duplicate.
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