FFVI: Divergent Paths

Hmm... I made the same change in my hack (using Mog's profile instead of Umaro's for the scenarios), which is built on yours, and I have never encountered this visual bug. Perhaps the difference is that I didn't let the game constantly re-initialize Mog in that spot. Let me pull up my code for that event.

Code:

CAAD4C: {5C}                  Pause execution until fade in or fade out is complete
CAAD4D: {D3-CC}               Clear event bit $1E80($1CC) [$1E99, bit 4]
CAAD4F: {F2-D0}               Fade out current song with transition time 208
CAAD51: {3D-0A}               Create object $0A
CAAD53: {41-0A}               Show object $0A
CAAD55: {C0-A4-80-8A-34-00}   If ($1E80($0A4) [$1E94, bit 4] is set), branch to $ CA348A
CAAD5B: {37-0A-0A}            Assign graphics $0A to object $0A (Mog)
CAAD5E: {43-0A-05}            Assign palette $05 to character $0A (Mog)
CAAD61: {3F-00-00}            Remove character $00 (Terra) from party
CAAD64: {3F-0A-01}            Assign character $0A (Mog) to party 1
CAAD67: {3F-07-00}            Remove character $07 (Banon) from party
CAAD6A: {3F-04-00}            Remove character $04 (Edgar) from party
CAAD6D: {3F-01-00}            Remove character $01 (Locke) from party
CAAD70: {3F-06-00}            Remove character $06 (Celes) from party
CAAD73: {3F-05-00}            Remove character $05 (Sabin) from party
CAAD76: {3F-02-00}            Remove character $02 (Cyan) from party
CAAD79: {3F-0B-00}            Remove character $0B (Gau) from party
CAAD7C: {3E-00}               Delete object $00
CAAD7E: {3E-07}               Delete object $07
CAAD80: {3E-04}               Delete object $04
CAAD82: {3E-01}               Delete object $01
CAAD84: {3E-06}               Delete object $06
CAAD86: {3E-05}               Delete object $05
CAAD88: {3E-02}               Delete object $02
CAAD8A: {3E-0B}               Delete object $0B
CAAD8C: {6B-09}               Load map $0009 ("Choose A Scenario") instantly, (upper bits $2400), place party at (8, 6), facing down, flags $40
CAAD92: {CA-21-80-1E-80-44-80-B9-AD-00}If ($1E80($021) [$1E84, bit 1] is set) and ($1E80($01E) [$1E83, bit 6] is set) and ($1E80($044) [$1E88, bit 4] is set), branch to $ CAADB9
CAAD9C: {31-85}               Begin action queue for character $31 (Party Character 0), 5 bytes long (Wait until complete)
   CAAD9E: {D5-08-03}            Set position to (8, 3)
   CAADA1: {CE}                  Turn object downward
   CAADA2: {FF}                  End queue
CAADA3: {41-31}               Show object $31
CAADA5: {96}                  Restore screen from fade
CAADA6: {5C}                  Pause execution until fade in or fade out is complete
CAADA7: {C2-21-80-1E-80-44-80-B4-AD-00}If ($1E80($021) [$1E84, bit 1] is set) or ($1E80($01E) [$1E83, bit 6] is set) or ($1E80($044) [$1E88, bit 4] is set), branch to $ CAADB4
CAADB1: {4B-6F-01}            Display dialogue message $016F, wait for button press (Show text with window) (At top of screen) "STRAGO and TERRA race towards ..."
CAADB4: {92}                  Pause for 30 units
CAADB5: {4B-8C-0B}            Display dialogue message $0B8C, wait for button press (Show text with window) (At top of screen) " Choose a scenario...kupo!..."
CAADB8: {FE}                  Return

(Disregard the world of ruin branch up there)

Basically, I initialized Mog's profile as early as possible (during the Save Terra event) and then disallowed repeated initializations at the scenario split. Maybe the scramble is tied to the game trying to level average and the event script pushing past it (since there's no pause)?