so in order to go a little more in depth on how the bugged insc weapons occur:
maybe you can see a pattern in the following screens of the bugged staves that turned up on the forums:

remember: those are not filtered by a mod, instead it is just all the insc exclusive drops that were dropped without inscription and popped up here on pc (we did collect way more data from farms and own drops and others that claimed to have dropped them in insc area, where the skin however wouldn't prove that, so I did only include those bullet proof ones). It becomes VERY apparent that there is a pattern: they all have an insightful staff head. On the other hand not all staves that do drop with an insightful head are uninsc. so what do we make of that?
there is a duplicate removal routine somewhere in gw as it seems, which happens to mark insightful + energy in the same category as inscription that grant energy. so if the combination occurs - boom the latter mod gets discarded, which is... the inscription. Same was the case with slaying mods and dmg increasing inscriptions: both were in the category damage modifier and thus the latter mod got discarded... which was the inscription. so they fixed it by making the routine not detect those in the same category anymore, which is how the bugged insc martial were erased from the possible drops.
there are similar things to observe: an os shield can not have two mods in the same category - like two hp mods or two armor mods. and the one droppin dual at some point was damage reduction. again the routine did check for duplicate mobs and removed them, but somehow someone skipped the -x wS mod to add to that category - which is why ALL dualreduction shields have the -x wS as one of their two reduction mods. the bugfix is obvious from there. similarly an os foc never could drop with two hct mods. nor a foc. nor a staff. interestingly a staff can not even drop with two hct mods applied! but in that case the staff head was removed, so it is not a bugged one. it seems to have to do with the order in which mods appear defaulted on wepons. just for completion: they did obviously also group the inherent energy mod on a staff differently than the +energy from mods or inscs, so those do drop.
so with this said I tried to outline HOW the bugged insc area items were and are created, and from there challenge you to explain: what other mod combo out there could trigger a duplicate removal routine so that any martials could still get a insc removed leading to bugged insc area martials?