Q: Main Screen not showing. (This should no longer be a problem thanks to @deck26 and @Mervinpais).
A: Try pressing the Flag a few times. If that doesn't work then Comment.

Q: Player not showing.
A: Wait a few Seconds.

Q: Player stuck in Ground or Roof.
A: Press “R” (btw it sends you to level 1)

Q: The game freezes when I jump (Credit: @Mervinpais). (Shouldn't be an issue anymore)
A: Try Turbowarp I'll try to fix that but idk how.

Q: When I press Play it sends me to a Purple Map/Area.
A: Press “R” or “M”

If any of these don't fix any Bugs then tell me in the Comments.
Or if you have a new Bug then tell me in the Comments.

OSP isn't the forum for bugs BaG (bugs and glitches) is. But if you're answering your own questions, then this topic won't fit in BaG.
Reporting to be closed.
(Ha! Did you think no one will see it in OSP? I have a sharp eye.)

I'll move this over to the “Help With Scripts” section for you - that's a better fit for this kind of topic

So you're asking for help on that project which is unshared but providing workarounds for anyone trying to play it? If it isn't shared how can anyone comment on it?

Needing to click the green flag more than once is usually caused by failing to proiperly initialise things. For example a variable may have a value that is stored in the project or is from a previous run. For example the game over condition from the previous run may make a green flag script run the game over code.

Good practice is to properly initialise variables, costumes etc before any game code runs.

when green flag clicked  // only  one in the whole project
broadcast [initialise v] and wait  // sprites respond by setting variables etc to initial values
broadcast [ready v]  // NOW you can safely run game code

Good practice is to properly initialise variables, costumes etc before any game code runs.

First: just like @deck26 just said, make the variable reset/initialized so they are ready

Also there is a bug with turbowarp (they know the bug and cant fix it since this is a bug with the scratch API) where you just need to paster link of the project and it will show up!(somehow) so i played the game and…

Bug 1: when you jump ingame, the game freezes for a quick 1 second and then continues

Bug 2: The title screen doesnt show up until you click the green flag twice.

these are the only bugs i found