1. The tug that is supposed to raise the aircraft doesn't raise the FSLabs A320/A319.
No, it's not. For some reason, some 3rd party airplanes cannot be raised, most likely due to them using a custom "flight model" during ground handling so, we flagged this in the GSX internal database, so the truck won't try to raise them, to prevent potential side effects.
This option is user customizable but, if you try to use it on the Fs Labs, it won't do anything, because the airplane seem to not allow to be raised externally.
2. When the pushback is completed, it stops abruptly.
We'l check this. Does it happen with the FS Labs only, as it seems from your subject ?
3. I downloaded the new GSX update. The tug driver overshots the node when I'm being pushbacked. I uploaded two screens, one of what is the selected pushback configuration and two with red and blue lines. The blue line is more or less what I would expect. The red line is more or less what it did. It "overshot" the node.
And that's why you have the ability to move the Corner node, so you can control that. It will probably require move the Corner a bit up in this case. By default, is the exit node closes to the parking in the AFCAD, but since all AFCADs are different, you can move it to improve the curve.
4. Another question, not especially related to the FSLabs but... is it possible to add multiple nodes to do a more complex pushback procedure or is the limit 1 ?
Not right now, but eventually we'll add the ability to add any number of intermediate nodes. Most likely in the full customization editor, since the Quick Editor is supposed to be...quick.