Actually this applies to 24w18a right? However, CF shows it as 1.20.6. This caused some launchers with the update mod feature to make incorrect choices when performing update operations. Some launcher developers often receive false positives related to this (called false positives because this has nothing to do with the design logic of the launcher).

Can this be set to 1.21-Snapshot like other similar releases?

I'd like to add, that the same thing happens with the latest available version for 1.20.1 on CurseForge

Also reported in #1926