Mangrove propagule grow into trees too quickly compared to Java

The current mangrove propagule can grow into trees too quickly, far quicker than what Java has.

How to Reproduce

1. Make sure your random tick speed is normal (set to 1)

2. Plant a lot of mangrove propagules

3. Wait

Observed Result
Some of the propagules grow into trees too quickly (sometimes even instantly), even if you set the random tick speed to normal (1).

Expected Result
The propagule growing into trees should take a little bit of time.