The player cannot enter swim-mode when they have the blindness status effect applied

The bug

The player will be unable to start swimming if they have the blindness status effect applied.

Steps to Reproduce:

1. Enter a pool of water, 2 blocks or higher
2. Apply blindness:

   /effect give @p minecraft:blindness 1
   

3. Press and hold ctrl, while moving forward

Observed Behavior:

The player will never enter swim-mode with the effect applied.

Expected Result:

The player would be able to swim, regardless of the effect.

Screenshots/Videos:

Video by [Mod] Avoma:
MC-190768.mp4