The problem is still actual. So I've updated the previous patch and a bit refactored the code.
The patch needs to be applied to the original TinCan from the vendor folder.
It makes AJAX error behaviors more configurable.
I see two problems with this functionality.
1. There is no conventional way to hide or change this message from display if necessary. (why can't it be just configurable?)
2. Each error displays every time on the new line and it looks wrong when some AJAX query repeats from time to time (Notifications as an example)
My bad. This issue was provided by another patch I use.
quick solution with hook_form_alter()
$form['buttons'] = $form['actions'];
unset($form['actions']);
But it really needs to be fixed.
Hi, @AnzyKronus it's an issue with the contrib color module to resolve it need inside your current theme create the directory "color" with file color.inc
and add something like this
$info = [
'schemes' => [
'default' => [
'colors' => [],
],
],
];
Update
Update patch