I finally made it even if it took me several hours of testing etc...
You can, by the way, skip most of the text because basically only the last (yellow marked) part is interesting.
Already years ago I got aware that in certain quests you lose Masters Blitz and other Epic Destiny things upon using any portal inside a quest.
Therefore it was my plan to make the developers aware which quests are not working correctly.
My test in each quest was quite simple, using the Exalted Angel Epic Destiny and use a Dimensional Door cast by a Hireling.
In some quests, you lose the charges for your Reborn in Light and in others not upon using a Dimensional Door.
Because of this, I got also results for quests where no other portals exist.
This test should be good enough to confirm whether this works on any other portal in any quest or not and out of my experience there was never a contradiction to my test.
I think it is out of the question that this should not happen in every last quest in the game and therefore this is quite sure this is a need to be fixed by the developers.
And the second issue we have with the Lingering Grip of Death effect if you play in reaper difficulty.
In certain quests, the Lingering Grip of Death timer starts again if you lash back to your soul stone.
This is quite annoying but of course, at the first moment, it is questionable whether this is an intended additional difficulty or not.
Anyway, I decided to do another test in which quests we have this and in which quest not.
My test was quite simple, either I got intentionally killed by monsters or used two uncleansed green steel items to kill my character.
Because of this, I got also a result for quests where you have no monster to fight.
Now after this two tests I have a quite complete result and some patterns are now much more obvious.
Even if I had already before I started the testing an idea what the patterns are but it was not proven enough in my opinion.
One, may be surprising, result is that the lists for both cases are identical!
This means if you have an issue with the Epic buffs like Masters Blitz you ALSO have an issue with the Lingering Grip of Death and this always, with no single exception!
The next pattern is that it is just important from which area you enter a quest.
e.g. if you are in the King's Forest, every quest you enter from the King's Forest doesn't work correctly.
This is especially interesting because the only quest out of this arc you enter from Eveningstar works correctly.
There also other examples that show clearly that the adventure packs are not the deciding factor whether a quest works correctly or not.
In any case, I see my initial assumption that the Lingering Grip of Death effect reset is not an intended “feature” as clearly proven with this.
Maybe both issues can be fixed when the developers got aware of the pattern.
In any case, a fix is possible because I know it at last for Gianthold Tor that this quest worked once wrongly and now correctly.
And all other quests you enter from the Gianthold public area work correctly too.
And this leads to the final Pattern that only quests you enter from a public area are working correctly.
While every quest you enter from a “wilderness area” working not correctly.
And if they don't work correctly it is for BOTH the Epic Destiny and the Lingering Grip of Death effect.
I wonder if the developers are not aware of this issue and maybe if they are, there is a quicker solution for this problem than looking into each quest separately.
In any case, I hope my work was helpful.
EDIT: I found an exeption with Ritual Sacrifice as the only quest I know you can enter from a public area and from a wilderness area.
Seemingly this proves that the problem is "carried" with the character and related to certain wilderness areas.
Therefore seemingly not the quests have to be fixed it is the character and/or the wilderness areas
Quest working correctly
Quest working correctly but no reaper version available
Quest not working correctly
Quest not working correctly but no reaper version available
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