Strongbox Freeze when activated explicit ignores Freeze Immunity from Flasks

I noticed when opening strongboxes the "Freeze when activated" explicit was freezing my character despite the Freeze immunity explicit on my mana flask and the flask being active.

I recorded a video of the interaction here: https://youtu.be/KQV1HxUZD_Y

Here is a picture of all modifiers on the map I was in: https://imgur.com/a/3JRgLDV

As far as I am aware none of these map modifiers should prevent the Freeze immunity on the flask from working. This was tested on T16 Jungle Valley, however this interaction was consistent on other maps I tested including Mesa and Toxic Sewers.

I swapped my immunity to the Brine King pantheon and this work as expected where I was not frozen when activating the Strongbox with the Freeze when activated explicit.

I also did not note any freeze interaction due to cold damage or monster interaction while using the flask freeze immunity only, from my testing seems to occur only with the Strongbox explicit. The flask explicit seems to work in all other scenarios as expected, so from my testing it seems like the Strongbox explicit is ignoring the Freeze immunity granted by the Mana flask.

If you need any more information please let me know.

You didn't use it while Frozen, hence no Freeze Immunity...

Thank you for the correction, seems I've successfully proved myself incapable of reading comprehension.

FWIW, I much prefer your interpretation to GGG's ideation.

Who the heck can lift a potion to their mouth anyways when frozen solid.

I just got frozen on 2 chests in a map even though I have purity of elements.