FYI the fix in 129 has been verified externally by the original reporter at https://discourse.mozilla.org/t/one-of-my-manifest-v3-addons-is-not-waking-up-when-it-should/131349/41
Bug 1905153 Comment 10 Edit History
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FYI the fix in 129 has been verified externally by the original reporter at https://discourse.mozilla.org/t/one-of-my-manifest-v3-addons-is-not-waking-up-when-it-should/131349/41 Edit: this comment was meant for bug 1905505 (https://bugzilla.mozilla.org/show_bug.cgi?id=1905505#c6). This bug here cannot easily be verified because it is a race condition, one that has been simulated by the automated unit test.