Guild Wars 2

Hello,
I’m currently playing with my engineer and discovered a bug. When you use a kit on engineer and turn back to your main weapon(default equipped weapon) your “back item” disappears visually. In a normal situation while you are using your main equipped weapon, your back item must stay visible. Back item visibility stays activated, I think this is just a visual bug. This bug doesn’t always happen but happens in pve so frequently and sometimes in wvw. Please help, thanks. A screenshot of the bug is added.

This bug still exists after 1 year, please fix it. I can’t use my fancy back items as intended with my engineer. Thanks.