I'm replaying RST and I ran into the "Jules Cullen is missing" issue. I downloaded the temp bugfix, but she still didn't show up. Also, Lieutenant Phinan Kulzak walked up to me began an endless conversation loop*. The only fix that worked for me was reverting back to V 1.0.4 and using PRID to get Jules to appear. When I loaded RST in the CS to find her ID, I encountered a couple of errors that may or may not cause issues later.
Error 1:
Unable to find script (0105c691) on owner object "aaRCIceChestLidCollOpen"
Error 2:
Reference attached to wrong cell for this location:
REFR Form (0101935C) to STAT form 'RockGreatForest645' (0003D050) in cell 'Wilderness' (010022D7) (4, 0) in WorldSpace 1RCTuathDanan (00850F6E)
Another oddity I encountered was with a quest marker that shouldn't have appeared. Just after I was told to seek the Water Warrior, I found a quest marker directing me to the Cave of Seeing*. The marker disappeared at some point after I left Sancre Tor to travel there.
There's also a minor cosmetic issue with the new apartment in the IC Market District: the two benches by the table ( in cell aaRCImperialApartmentInt) are floating in the air, rather than resting on the floor.
There is a potential issue with the pathgrid around the Imperial Manor in the IC Arena district. Near the southeast corder, there are two nodes (circled here) partially within the .nif and liked together in a way that's impossible for NPCs to traverse.
* This is because Phinan's class is "Guard" but his race is Breton. If the Player has a bounty (which I did for attacking Grandmother), any guard that lays eyes on him/her will approach and engage in conversation. If the guard is an Imperial, he/she will go through the "You've violated the law" dialogue. If the guard is any other race (as in the case of Phinan), they will be unable to engage in the proper "Arrest" dialogue (which seems to be tied specifically to Imperials) and immediately re-engage you in conversation every time you exit the dialogue menu. This will pose a problem for all custom guards in Sancre Tor that aren't Imperials.
*The map marker is listed as "Cave of Seeing", but the in game cell name is "Cavern of Seeing".