The implied second action in Matthew 27:8 is the arrival of the day when Matthew is writing his book.
Amen I say to you, that there are some of them that stand here, who shall not taste death, [eos] they see the kingdom of God coming in power. (Mark 8:39)
According to you, the verse means that the moment the kingdom of God comes, all will taste death (and while dead, see what is going on).
No, it doesn’t and No, I don’t.
How you can draw such a conclusion is a mystery since the verse says “some” not all and puts the seeing BEFORE tasting death and nothing about “the moment”.
Until really is not a difficult word and trying to redefine it to support an idea not in the Scriptures simply won’t do.
Mark 8:39? Maybe Matt.16:28?