I currently try to create a character with multiclassing Warlock 1/ Bard X. I increase the bard level one by one to kinda get a feel how the character would develop, and when I reached Warlock 1/ Bard 3 the character editor would not let me choose level 2 spells, even though according to multiclass rules I should have been able to. I first had to view the character sheet and enter edit mode from there to be able to choose level 2 spells. A minor inconvenience, but an inconvenience nonetheless.
I currently try to create a character with multiclassing Warlock 1/ Bard X. I increase the bard level one by one to kinda get a feel how the character would develop, and when I reached Warlock 1/ Bard 3 the character editor would not let me choose level 2 spells, even though according to multiclass rules I should have been able to. I first had to view the character sheet and enter edit mode from there to be able to choose level 2 spells. A minor inconvenience, but an inconvenience nonetheless.
Simply refreshing the page should fix that. When you first change your level, the spell list still has your old level cached.