Append_bbcode doesn't pop tags without adding them in the same call

[KoBeWi]

Godot version:
3.2.1

Issue description:

$RichTextLabel.append_bbcode("[color=red]test[/color]test2")

$RichTextLabel.append_bbcode("[color=red]")
$RichTextLabel.append_bbcode("test")
$RichTextLabel.append_bbcode("[/color]")
$RichTextLabel.append_bbcode("test2")

[JulianHeuser]

In case anyone is banging their head against the wall like I was, a decent workaround for this is to use pop() instead.