I wanted to share my opinion about this below the post here.
To be honest, i think it's unfair that 2x FITS under the 8x but is unallowed even though it's a viable build that could be used.
In my opinion this isn't a bug and the bug in question is fact that 2x is unallowed under 8x, as well as some other builds that use this exploit, i think scopes that fit under other scopes should be allowed, therefore many builds that are possible didn't need game bugs to be used.
Hope devs allow in the future comps like 2x+8x cause if these fit they should be allowed, for now im not bothered as game isnt finished and some things work the way they weren't checked yet if is the best - but in the future please reconsider what combinations should be blocked due to weapon limits.
I hope for the best, love ya devs.