Bug concerning changed Game Speed + Dream Blocks

[d3rped]

Turning the game speed down in Assist Mode causes the player to be unable to (instantly) hold on to dream blocks (hope that's the correct term, I mean those in Chapter 2) after dashing through them.

The 50% Game Speed Option seems to be unaffected by this.
70% Speed seems to work for most blocks but not some.

Platform: Linux
Celeste Version: 1.2.4.1 (itch.io)