well afaik the common bank was never fully applied properly on this PSO server
hence why some items and mags might suffer bugs when placed there
it´s recommended not to rely heavily on the common bank due to it´s risk of inducing bugs
as for mags bugging by themselves the only one time I´ve had any form of problems with them
was when one of my mags got deleted from my inventory itself
(it was a tellusis maxxed level, I forgot the stats but it was aimed for POW, you know before Godric gave me
the Agaysta that I keep using up to date, btw ty very much Godric you really saved me big time there)
but back to topic...
long story short, try not to rely on CB atm, as for the mag bug... you´d have to pinpoint the exact reason as to why it
gets bugged before moving to the next step etc...
but yeah I guess I would support this as well.