Yes, of course, I think I wrote it in the original comment as well, that I see, it's part of the puzzle. But I still think, it's better to have it behaving as expected (grabbable) and enforce the puzzle mechanic otherwise.

Now do you see why there was no Climb on the red block?

Interesting, I thought about making a map for Haydee in the future, haven't decided, if I really will, though.

I've tested all changelog items and I can confirm they're working (ledges grabbable, grate on floor not passable).

I don't want to be annoying, but making the ledge grabbable at the bridge in A/red might have introduced another unwanted shortcut: From the newly grabbable ledge on the red pillar, you can now jump over to the pillar with a plant on top with the button. Barely, but it's possible. I do not need to go the intended route anymore like this. Maybe move the white pillar with plant and button one tile further away? I think this should fix it, without altering anything else.

I have some other minor remarks/comments, that I would not consider bugs, but in case you're interested.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/changelog/3085010445

This is also a common thing. It is more difficult to update mods in H1 than in H2. It doesn't want to update or errors occur when adding files to the workshop. It is also impossible to remove the 2nd update because it is not working.

Nice, game does not seem to start anymore, though. Game crashes once I try to start a new Water_Prison run or load a save... 🤔

Thank you. A typical bug that the developers never fixed. In H2 you can also fly through the grate if Climb is not turned off. I'll try to fix it.

Probably found a bug: This is in Block A/red at a very end, you'll find an important item below the grate. Like this, you can lower yourself by pressing CTRL and facing away from the grate and get the item, without removing the grate first.
--> You can skip the need for the receiver here like this.

If it's unintentional, it might be an idea to combine the grab-actor with the button for the grate toggle? So it is removed, when the grate is there, and restored, if the grate is away?