Dashboard v2 : referencing variables in tab grouping fail

What happened?

When creating a dashboard, I want 2 variables:

• loadbalancer, lists my aws network load balancers
• targetgroup, lists my aws targetgroup associated with the selected load balancer Creating the variables at the dashboard level works:

However, I anticipate needing a tab per load balancer. So I want the variables to be at the tab level. Doing that, the targetgroup variables fails

Here is the loadbalancer var config:

Here is the targetgroup var config (with and without filtering on loadbalancer):

What did you expect to happen?

I expect behavior to be the same for global and grouped variables

Did this work before?

N/A, I am just starting to work with v2

How do we reproduce it?

Create 2 variables, the 2nd using the 1st. At global or tab level

Is the bug inside a dashboard panel?

no

Environment (with versions)?

Grafana: v13.2.1 (56cd3e9288) OS: Amazon linux Browser: Firefox

Grafana platform?

Docker

Datasource(s)?

Cloudwatch (do not know version)