Bug 2040251 Comment 2 Edit History

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Original comment by
on 
I reproduced the issue on the latest Nightly (153.0a1/20260521211559), Beta (152.0b1/20260520111910) and Release (151.0.1/20260520211922) under Windows 11 and Ubuntu 25.10.
For comparison, per the STR, I checked on the latest Google Chrome (148.0.7778.179) as well, where the issue does not occur.

In Firefox, clicking the extension button will log the following in the extension console:

[x-my-custom-dynamic] Not visible for request 552
[x-my-custom-session] Not visible for request 552
[x-my-custom-static] Not visible for request 552
[x-my-custom-unmatched] Value is "UNMATCHED" for request 552

In Chrome, doing the same, logs the following:

[x-my-custom-dynamic] Value is "DYNAMIC" for request 800
[x-my-custom-session] Value is "SESSION" for request 800
[x-my-custom-static] Value is "STATIC" for request 800
[x-my-custom-unmatched] Value is "UNMATCHED" for request 800
Revision 1 by
on 
I reproduced the issue on the latest Nightly (153.0a1/20260521211559), Beta (152.0b1/20260520111910) and Release (151.0.1/20260520211922) under Windows 11 and Ubuntu 25.10.
For comparison, per the STR, I checked on the latest Google Chrome (148.0.7778.179) as well, where the issue does not occur.

In Firefox, clicking the extension button will log the following in the extension console:

```
[x-my-custom-dynamic] Not visible for request 552
[x-my-custom-session] Not visible for request 552
[x-my-custom-static] Not visible for request 552
[x-my-custom-unmatched] Value is "UNMATCHED" for request 552
```

In Chrome, doing the same, logs the following:

```
[x-my-custom-dynamic] Value is "DYNAMIC" for request 800
[x-my-custom-session] Value is "SESSION" for request 800
[x-my-custom-static] Value is "STATIC" for request 800
[x-my-custom-unmatched] Value is "UNMATCHED" for request 800
```

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