Solution For Constant Weapon Unequipping

I’ve been trying to look online for a solution to the game constantly unequipping my selected weapons, but I can’t seem to find one anywhere. The game will unequip my weapons randomly, when using carriages or trains and at various other times for no explicable reason. This is obviously an extremely common frustration in the game, and I struggle to believe they intentionally designed it this way at times, but is there anykind of a solution?

I saw someone suggest equipping weapons to sidearm/back/shoulder at a gunsmith but I tried this and then took a stagecoach ride to Saint Denis only to find that my weapons had, once again, been unequipped.