Hmmm ok I see. I also used to switch instrument while twisting string/brass songs at lower levels for AE kiting before i got worn mods, but do or did people do that actually while meleeing?
I wouldnt have noticed this at all if it wasnt Mask of Anos (ultra short overhaste buff) for my wind mod Concubines Veil - and in that particular example its soooo bad to have this melee stop you can imagine ... wasting half the mask of anos buff and loosing melee too totally for that time.
If switching out mods is not intended while combat (it doesnt stop or alter songs btw, just stops melee it seems, so you still can switch ur lute and horn for ae kite) could it maybe be changed so that this "melee stop" only occurs when you actually upgrade one of your mods during the switch?
Once you use worn mods this melee stop system becomes pretty useless too imo, tell me two mod items that you would actually switch out in the same item slot (i mean worn instruments) to gain their mod for just a tick. If there are any, they are not highlevel for sure.
Even in lower levels i never actually meleed while switching out mods only for ae kites its beeing used - was it actually abused? I cant imagine.
Can it be this "nerf" was implented before melody system, when you still could use different instruments for beneficial songs when you had to manually twist them?
Please have a look if this is really needed, so rarely you switch out mods while combat and at high level with worn mods not at all. Its more of a bug or "nerf" or whatever you want to call it than a prevention to switch out mods imo. And for my example its really catastrophic to lose melee combat when switchin in mask of anos omg.