On versions later than 1.12.2, the mod's version is not displayed correctly as "22.18.1" on the mods page or in the Prism Launcher mods list. This is caused by the META-INF/MANIFEST.MF file not storing the Implementation-Version, and as such the mods.toml's ${file.jarVersion} doesn't get replaced with the correct version, instead displaying 0.0NONE (or NONE on Prism Launcher).

@DonBruce64

Wondered why this didn't happen. Will note and patch.

@DonBruce64 this often causes an error in which people weren't able to join servers. This is a long-standing issue

Wonder why it only happens sometimes for some people and not for all people...?

@DonBruce64 it would be nice if you find time to return to MTS and continue bug fixing, because only those people can tell you, I never had a server nor do I join servers.

@BluSpring do you know how to get the Mainifest.mf file to generate with that value? Cause I don't create that file. That gets created by the compiler.

You need to add "Implementation-Version": project.version to the manifest attributes here:

Forge's MDK has an example showcasing this behaviour too. This needs to be added for all versions past 1.12.2.

I tried this, and ,"Implementation-Version": project.mod_version, but neither seems to do the trick?

What if you try filling out the fields like this?
https://github.com/bonsaistudi0s/Winter-Overhaul/blob/master/build.gradle#L95-L101