Hello guys,
I noticed that, since last Thunderbird releses (78.x for sure), the software removes media queries CSS.
I add a block like this:

<style type="text/css">
@media only screen and (max-width: 480px) {
[[CSS CODE]]
}
@media only screen and (min-width: 481px) {
[[CSS CODE]]
}
</style>

but on the received email I have only this:

<style type="text/css"></style>

Other CSS code blocks remain as they are.
Any one facing this "issue"? Any suggestion or solution?

Thank you very much :)
Alessandro