Forge version: n/a
Twilight Forest version: 1.12.2-3.7.424
Link to crash log: n/a

Steps to reproduce:

1. boot with latest recommended forge version, 2655

What I expected to happen:
Game should boot with latest recommended forge

What happened instead:
Game fails due to the mod requiring a dev version.
Please ask Lex to push a new recommended version if you need that fix.

u wat

yeah bro download latest. lexmanos tag recommended builds on a hardly predictable basis.

Lex said explicitly that if a mod needs a dev version of forge, their author should go ask for a new recommended build

As Lex said, it's up to the mod author to ask for RB:
MinecraftForge/MinecraftForge#4940

So go ask him!