Mechanics Implement Mega Sol correctly in non-Champions formats

[Dialzza]

What type of bug are you reporting? Mechanics

What is the bug?
Mega Sol doesn't seem to be applying the sun damage buff, but is turning weather ball into a fire type move

https://replay.pokemonshowdown.com/gen9natdexdraft-2594843760

Are you able to replicate it? If so, how?
Use Mega Meganium and click Weather Ball

Edit: it works properly in champions, but not other formats

 

[Hydrametr0nice]

We are taking a conservative approach while coding Champions to avoid modifying SV's main code, as many bug patches for Champions are still being released. We want to avoid implementing changes that might need to be reverted later.

We are also waiting for the new gens to see how everything ultimately settles. In this case, we are specifically waiting to see how Utility Umbrella interacts with Mega Sol, so that part of the ability has not yet been implemented in the regular SV code.

 

[Dialzza]

Don't we know that the ability treats the full execution of Mega Sol as under sun (not just on the user) because of Tyranitar (and weather ball for that matter) in champions?

 

[Hydrametr0nice]

I'll do this sometime tomorrow.
Edit: https://github.com/smogon/pokemon-showdown/pull/12017