Tried using this mod for the first time in 1.19.2. Everything was going well up until I noticed that there's an issue in which every single entities, from mobs until block entities e.g chest are invisible, maybe you could investigate this bug?

I am fairly sure this isn't an issue with ModernFix, unless it can be easily reproduced. Since 1.16.5 there is an issue with Invisible Entites with Configured / Alex Mobs mod, so if you have that mod installed and opened a Mod Menu / Mod Settings menu, that is probably the cause.

Agree with Kanzaji.

This issue report needs more information.

• What other mods are installed? Please try to reproduce with only a few mods.
• Please send the latest.log file from a game session where you could reproduce the issue.

Aside from that, I agree with the above - ModernFix doesn't currently patch anything relating to entity rendering so it's unlikely to be the cause.

Closing as this issue report is not actionable as-is. If you are still able to reproduce this with the latest version of ModernFix for 1.19, please comment with more info and I will reopen.