I can assure you that this is an 'issue' with only ProMods and has been for a while so please take my word for it without a gamelog.
In the future I will provide logs where I see that they are usefull to have,
This template - bgplus_i18_giant_board
Uses the board in this directory /model/sign/navigation/sr/dyn_modnavsigns_sr_panel_1100x380.pmd.
This board doesn't have a blue colour variant so OMNI just used a sign frame.
I apologise in advance if this is not something that ProMods looks into as it technically isn't a bug, but it looks really jarring in game and I always find it annoying.
Bulgaria in Focus