It's extremely unlikely that moist, room air is getting in behind the magnetic seal. Condensation in the gap will be a result of your window drying out i.e. older, absorbed condensation sweating out of the frame into the new air cavity. This is the best possible news for your window: the wooden frame will soon become dry and therefore no longer be prone to mould, rot, etc. A dry window will not decay and should remain in top decorative order behind the Extraglaze panel. The current condensation can be removed very easily: just remove the panel briefly to wipe the window whenever this happens. After a few episodes the drying out process will be complete and condensation will become a thing of the past. However, please keep an eye out for any water that could be wetting the window on a continual basis from outdoors e.g. from a leaking gutter above.

It's extremely unlikely that moist, room air is getting in behind the magnetic seal. Condensation in the gap will be a result of your window drying out i.e. older, absorbed condensation sweating out of the frame into the new air cavity. This is the best possible news for your window: the wooden frame will soon become dry and therefore no longer be prone to mould, rot, etc. A dry window will not decay and should remain in top decorative order behind the Extraglaze panel. The current condensation can be removed very easily: just remove the panel briefly to wipe the window whenever this happens. After a few episodes the drying out process will be complete and condensation will become a thing of the past. However, please keep an eye out for any water that could be wetting the window on a continual basis from outdoors e.g. from a leaking gutter above.