A lot of people have mentioned that the font is hard to read and we have changed it to the font that is on the itch page. I will upload a new build after the game jam ends.
As for the bug, it seems quite odd. I want to explain how the jump height mechanics work incase it isn't a bug. In the game, jump height is affected by 2 main factors. The angle of the player impacts jump height which is mentioned in the opening dialogue "And remember, you can jump higher when you’re upright." However, I should have considered the fact that not everyone wants to read all the dialogue and might skip past this. I should probably also mention this somewhere that the player is less likely to miss. The other thing that affects the jump height is how long you hold the spacebar down for. Holding it down for longer results in a higher jump. I didn't think to mentions this in the game as it's a common mechanic is many platformers. However, I think I should have mentioned it anyway since some people playing the game may not have played many platformers before and might not notice this.
Do you think the odd jump heights you experienced could have been caused by 1 or both of these factors or do you think it is likely to be a bug?