Problem with displaying local VTPK + TPKX after reopening project in Unreal (ArcGIS Maps SDK)

[GregorScheuchenstuhl]

Dear community, 

i am currently working with the ArcGIS Maps SDK for Unreal Engine (UE 5.6). I was able to successfully load and display my local data (Vector Tile Basemap & Elevation Model, Spatial Reference: ESPG:31255)

The first time I set up the project, everything worked perfectly - the basemap and elevation were displayed with the correct color. 

However, after saving and reopening the Unreal project, the map does not render properly anymore. I only see black background with outlines, but no colors or textures. 

I already tried the following without success:

Switching between Global and Local map type and refreshing

Re-adding the basmap and elevation layers

Checking API key and authentication settings in the plugin configuration 

Clearing Derived Data Cache 

The layers are still listed in the ArcGISMapActor, and the coordinates are correct, but nothing is rendered except outlines. 

Has anyone experienced the same issue or found a workaround for this?

I would greatly appreciate any advice. 

Thank you!

[AShahbaz]

Hi Gregor,

We were not able to reproduce this issue. Here are a few ideas to try:

• It could possibly be because of a incompatibility of spatial reference. Any difference if you set the spatial reference manually? Do you have any basemap/layer besides the local date? Could you test with: (1) a single data source and no elevation; (2) a basemap from gallery + your elevation; (3) default elevation + your basemap
• If you have multiple layers or elevation sources, does changing their order make any difference? 
• Could you add a View State component and look for errors in the console output
• Maybe a lighting issue? Could you change the view mode to unlit and check if the texture is still missing? Are other objects in the level rendering correctly? 
• Any difference between edit and play more?