With their tribal start, the whole UI turns invisible.

Meanwhile, if I do a normal start and travel to one of the orbital islands, it gives the following errors and doesn't depict the current map (but UI remains visible).

Error1:

Exception filling window for DubsMintMinimap.MainTabWindow_MiniMap: System.NullReferenceException: Object reference not set to an instance of an object
[Ref C89815C5]
at DubsMintMinimap.MainTabWindow_MiniMap.Blitter (Verse.TerrainDef def) [0x0004a] in <f60db389669a4694852deea860c347a5>:0
at DubsMintMinimap.MainTabWindow_MiniMap.procCell (Verse.IntVec3 c, Verse.Map map) [0x0019c] in <f60db389669a4694852deea860c347a5>:0
at DubsMintMinimap.MainTabWindow_MiniMap.UpdateMapTex (Verse.Map map, System.Boolean forced) [0x0013f] in <f60db389669a4694852deea860c347a5>:0
at DubsMintMinimap.MainTabWindow_MiniMap.DoWindowContents (UnityEngine.Rect inRect) [0x00026] in <f60db389669a4694852deea860c347a5>:0
at Verse.Window.InnerWindowOnGUI (System.Int32 x) [0x001a6] in <24d25868955f4df08b02c73b55f389fe>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch1 (string)
Verse.Window:InnerWindowOnGUI (int)
UnityEngine.GUI:CallWindowDelegate (UnityEngine.GUI/WindowFunction,int,int,UnityEngine.GUISkin,int,single,single,UnityEngine.GUIStyle)

Error2:

Root level exception in Update(): System.NullReferenceException: Object reference not set to an instance of an object
[Ref 1095F8BD]
at DubsMintMinimap.MainTabWindow_MiniMap.Blitter (Verse.TerrainDef def) [0x0004a] in <f60db389669a4694852deea860c347a5>:0
at DubsMintMinimap.MainTabWindow_MiniMap.procCell (Verse.IntVec3 c, Verse.Map map) [0x0019c] in <f60db389669a4694852deea860c347a5>:0
at DubsMintMinimap.MainTabWindow_MiniMap.UpdateMapTex (Verse.Map map, System.Boolean forced) [0x0013f] in <f60db389669a4694852deea860c347a5>:0
at DubsMintMinimap.MainTabWindow_MiniMap.WindowUpdate () [0x00051] in <f60db389669a4694852deea860c347a5>:0
at Verse.WindowStack.WindowsUpdate () [0x00016] in <24d25868955f4df08b02c73b55f389fe>:0
at Verse.UIRoot.UIRootUpdate () [0x0000a] in <24d25868955f4df08b02c73b55f389fe>:0
at RimWorld.UIRoot_Play.UIRootUpdate () [0x00000] in <24d25868955f4df08b02c73b55f389fe>:0
at Verse.Root.Update () [0x00083] in <24d25868955f4df08b02c73b55f389fe>:0
- POSTFIX UnlimitedHugs.HugsLib: Void HugsLib.Patches.Root_Patch:UpdateHook()
- POSTFIX brrainz.mod.features: Void Brrainz.ModFeatures:Root_Update_Postfix()
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch1 (string)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Root.Update_Patch2 (Verse.Root)
Verse.Root_Play:Update ()