This new Syracuse Server hotfix 12.20.2.5 embeds some important fixes for Sage X3 2024 R1: 

• Can't add a custom menuItem to a navigation page (X3-314247)
• Mult-runtime configuration: Runtime tags don't enforce anymore for interactive sessions (X3-315848)
• On linux: installation of Syracuse 12.19.18 leads to 100% CPU load (X3-315529)
• It embeds also all fixes described here

Syracuse Server 12.20.2.6 is available in portal my.sage.pt: