forkJoin/combineLatest works differently from 6.6.2 to 6.6.3 and even latest version 7.8.1

[dmcliver]

Describe the bug

forkJoin/combineLatest works differently from 6.6.2 to 6.6.3 when used with a ReplaySubject and Observable, the replay subject doesn't seem to emit the next value.

Expected behavior

From the reproduction URL provided below

Expected console output (as seen in rxjs <= 6.6.2):
0:one
1:two

Actual console output (as seen in rxjs >= 6.6.3):
0:one
0:two

I thought combineLatest might solve this issue instead, but even using combineLatest also doesn't make any difference

Reproduction code

No response

Reproduction URL

https://stackblitz.com/edit/rxjs-7dw9nv?file=index.ts,package.json

Version

7.8.1

Environment

Angular CLI: 16.2.12
Node: 18.20.2
Package Manager: npm 10.5.0
OS: win32 x64

Angular: 16.2.12
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, localize, platform-browser
... platform-browser-dynamic, router

Package Version

@angular-devkit/architect 0.1602.12
@angular-devkit/build-angular 16.2.12
@angular-devkit/core 16.2.12
@angular-devkit/schematics 16.2.12
@angular/cdk 16.2.14
@angular/flex-layout 15.0.0-beta.42
@angular/material 16.2.14
@angular/material-moment-adapter 16.2.14
@schematics/angular 16.2.12
rxjs 7.8.1
typescript 4.9.5
zone.js 0.13.3

Additional context

I cant find anyone mentioning this problem from an internet search but as 7.8.1 is two years old it would strike me as odd that if this is a bug no one else has discovered it. So perhaps it's just a case of incorrect usage of the library?

[dmcliver]

Possibly caused by

47d9e33#diff-a287f66fc20bf26caa2f42935756aa6a094f400e91d6b4a388aee4e4e11675c4R38

@cartant ?

[netoctone]

Yes, caused by commit 47d9e33.
ReplaySubject behaviour changed, now it satisfies the should not buffer nexted values after complete unit test.
forkJoin/combineLatest work as they used to.