Each time I press 'retry' (using the retry patch) I'm getting a glitch in my layer 3 BG, before the level reloads. Seems some tiles are disappearing and showing the BG area colour. When it reloads it's back to normal. Any idea what might be causing this?

(note the grid of dots in the top half aren't a glitch - they're animated rain)
Can provide extra details, just not sure which details might be relevant.
Thanks

(note the grid of dots in the top half aren't a glitch - they're animated rain)
Can provide extra details, just not sure which details might be relevant.
Thanks
