Flask siphon bug?

I'm playing ward break loop build and dies when encountering (siphon flask charges) mobs even though i have enough charge gain that it should not stop my ward flask from getting full charges to auto use from enchant

Bug Reproduction steps:
Have Iron flask gains 45 charges when ward breaks - 5x (iron flasks gain 2 charges when your ward breaks) notables from new timeless jewel and +356% charge gain
Have Iron flask uses 36 of 60 charges on use and restores ward with 10% reduced flask charges used from (careful conservationist) notable
Have Iron flask with (use when charges reach full) enchant

Excepted outcome = Iron flask should instandly get full changes whenever ward breaks even if (siphon flask charges) mob has drained 6 charges - total flask charges missing should be 36+6=42 < which is less then the 45 gained

Outcome happening in-game = Iron flask instantly fills just fine till encountering mob with (siphon flask charges) where ward then breaks and flask somehow doesn't fill and reuse causing death from self damage

Build POB: https://pobb.in/4o0NvPYblMR-

Yep, I play that build too, and that monster mod not only steals charges, but also prevents you from gaining them. https://www.poewiki.net/wiki/Monster_modifiers