Relation manager attach recordSelect not working after updating filament from 3.2.2 to 3.2.27

I have a UserResource with a GroupsRelationManager, which has this in its headerActions:

->headerActions([
    Tables\Actions\AttachAction::make()
        ->preloadRecordSelect()
        ->form(fn (AttachAction $action): array => [
            $action->getRecordSelect(),
            Forms\Components\Select::make('role')
                ->label('Group Role')
                ->options([
                    'moderator' => 'moderator',
                    'member' => 'member',
                ])
                ->placeholder('Select a group role')
                ->required(),
        ]),
])

->headerActions([
    Tables\Actions\AttachAction::make()
        ->preloadRecordSelect()
        ->form(fn (AttachAction $action): array => [
            $action->getRecordSelect(),
            Forms\Components\Select::make('role')
                ->label('Group Role')
                ->options([
                    'moderator' => 'moderator',
                    'member' => 'member',
                ])
                ->placeholder('Select a group role')
                ->required(),
        ]),
])

When I try to attach a group to a user, it is as if the recordSelect for selecting a group is disabled. I can't click it or anything. This worked before I upgraded filament: Upgrading filament/filament (v3.2.2 => v3.2.27). I have attached a screenshot of the grayed out select field in the attach modal for attaching groups to a user.