Hi Alexander
Thanks for your time and your demo. New layout is aligned correctly to alClient,
but it's panels can't be sized. I must add a region as its parent first for sizing panels in this new Layout2 is working. But then aligning of Layout2 to alClient is not working any more

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My case (see my post #1) is easy reproducible with just adding new layout to your layout's demo in JQueryDemoV3 demo.
#1
I added new Layout2 (aligned to alClient) to yellow panel in your JQueryDemoV3 demo and created two panels in this new Layout2 component. Then I run your JQueryDemoV3 demo. When running your demo new panels in this new Layout2 can't be sized.
#2
After test #1 I added a cgRegion (aligned to alClient) to your yellow panel
first and
then new Layout2 is added on this region. Now sizing in new Layout2 is working, but new Layout2 is not aligned to alClient in run time. I can see yellow color from your original panel from JQueryDemoV3 demo, color from my added cgRegion (parent of my new Layout2) is not even visible.
#3
I copied your original Layout component from your JQueryDemoV3 to my demo (new, fresh application). I don't use frames. Same problems occurs in this scenario too.
Thanks for your feedback in advance.
Regards