I think I figured out where the looping jump actually should be jumping.
There's this piece of code after Jess's sex scene that says that in case Chris isn't dating Silver, the next label to jump to should be the Silver phone call scene that ends with the wrong jump back to the end of the hot tub scene, creating a loop (label MCHotTubFinale). And in case she is, then the call scene will be be skipped (I guess Silver is too busy with Chris in this case to answer the call), Jess and the MC will run downstairs right away (just like in the end of the call scene) and we'll jump directly behind Chris's door (label ChristinePostHotTub)
Code:
label JessSexDone:
if ChrSilDate == 0:
jump YachtSilverPhone
else:
scene Day14_Jess_06 with dissolve
"In few moments you take the first opening you get and run downstairs."
jump ChristinePostHotTub
From that and from the content under the ChristinePostHotTub label I'm guessing that the phone call scene is just an additional scene for all paths where Chris isn't dating Silver and the story should continue at the ChristinePostHotTub label that is actually physically located right after the JessSexdone label. (damn, "x" and "D" next to each other even inside a word gets replaced with XD smilie LOL. See: JessSeXDone )
I can not be 100% sure about this before the official fix gets released, but I am 99.9% sure that I'm right.
So here it is. Just extract it into the root folder of this game (where the game launcher exe file is).
The game will probably
crash the
first time you start it after applying the patch (if you haven't extracted rpa archives). Just close all the windows that pop up and
start it again. It should work the second time. (It's a known little problem of Ren'Py)