Saving in PrimalPlayerData does not work since Patch 259.21

In the new version of my Builder’s Helmet mod i used the ability to save data to an own PrimalPlayerData, which is a child of PrimalPlayerData_BP_Base. This was working in Patch 259 and 259.1, but it does not work any longer since the ARK Patch 259.21.

Grebog (WolionGames)