Preview Alpha Insiders can expect another new update today, complete with brand new fixes. This update (1802.180125-1923) will begin rolling out at 2 p.m. PST and will become mandatory shortly after that. Read on to learn more about the fixes and known issues related to this build.

Fixes:

My Games and Apps
  • Fixed an error that resulted in content that was installing/downloading not resuming after a reboot.
  • Certain games when installing had been failing to run on first launch until a reboot this is now fixed.

Party Chat
  • Reliability fixes to improve the time it takes for users to join a Party Chat session who had been experiencing long join times.

Pseudo Localization/Language Translation String Fixes
  • Users will no longer see incorrect language translations in the build. If you do encounter any incorrect strings please report a problem

Profile
  • Fixed an issue which caused the incorrect profile color to display after powering on the console.

Known Issues:

Games Installation
  • Games that are installed fail to launch. Workaround: If the games are installed to an external drive please copy the game to the internal drive or attempt to delete the title and redownload to fix the launch error.

Display
  • We are investigating the inaccurate RGB colors that have been reported when displaying in 4K HDR mode when playing a UHD disc.

Tournaments
  • The left and right navigation for selecting date and time during Tournament creation is currently reversed when the console language is set to Arabic or Hebrew.
  • Left and right navigation in Tournament twists is reversed when the console language is set to Arabic or Hebrew.
  • Left and right navigation in the bracket view of Tournaments is reversed when the console language is set to Arabic or Hebrew.

Avatars on Home
  • Users wishing to represent themselves as an avatar can do so by changing their settings under My profile > Customize profile > Show my avatar.


Source: New Preview Alpha System Update - 1/27/18 - Xbox Wire

See also: January 27th: New Preview Alpha build available (1802.180125-1923) | Xbox Forums