Automaterialization using BackfillPolicy.multi_run

[CNavasare]

Issue:
Not able to back-fill downstream asset, using multi-run BackfillPolicy when Automaterialize is ON.

Details:
I am using dagster 1.7.9 with Auto-materialize.lazy rule.

I have a use case, there are two assets A and B. B is dependent on A. I have defined Multi-partition definition(which is same for asset A and B) such as ["x|21-10-2024", "b|20-10-2024....] where x,b are Dynamic partition and second one is Daily-partition.
I want to run back-fill such that each run will execute for 5 partitions. I used BackfillPolicy.multi_run(max_partitions_per_run=5) on @asset decorator.
It is working when I run the back-fill only for Asset A or Asset B.

But it is not working when I turn on the Auto-materialize feature.
When I trigger back-fill for Asset A with Auto-materialize feature turned ON, multi-run works for Asset A and after it completes, only single partition of Asset B is back-filled. I want multi-run policy to be applied to Asset B as well. So when Asset A gets completed, back-fill should be triggered for Asset B for the same partition range as of Asset A.

Could you please let me know how it can be achieved.
In short, I want downstream asset to be triggered for multiple partition once upstream asset completes its backfill.