Can Assign Saved 3rd Job SP To 4th Job

Okay so I dont know exactly "what" caused this to happen, but right now i've managed to spend 23 SP into 4th job at level 121 (more than intended) and i've had to retrace my steps to figure out a way to recreate it. So, from levels 115 to 120, it was telling me i couldnt assign any more SP in 3rd job (i believe this was due to getting Holy Symbol from the ironman exchange, but i cant confirm) so i had 15 SP when i hit 120. Did my job advance and assigned the job advance SP, but it also let me assign all of that SP too. Now, i hit 121, and it was telling me i couldnt assign any more until i assigned them to 1st-3rd job (although trying to assign these sp to 3rd job told me to go to 2nd job) but without closing the window i clicked to assign again and it just let me assign all the new sp too, so.. https://uploads.playkuro.com/forum/images/1782461614356-1a11576d2440cbf6.png