TraceContext is null in rxjava3 and hence the traceability of the request across all the threads is lost

[Malika-Mindi]

Describe the bug
springBootVersion = "2.7.5"
springCloudVersion = "2021.0.4"
rxJavaVersion = "3.0.7"

Is there a workaround on how we can fix this. Some suggestions were made to use RxJavaPlugins to propagate TraceContext across Threads . I could not find any code samples doing this . Any help will be much appreciated.
Thank you

This issue does not exist in rxJavaVersion = "1.3.8"

Sample

[Marcin Grzejszczak]

we don't support rx java > 1