FF129 Relnote: sync XMLHttpRequest blocks async events #34979
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(comment last updated: 2024-07-24 10:57:51) |
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FF129 fixes a long standing bug in XHR in https://bugzilla.mozilla.org/show_bug.cgi?id=697151 where events for an async XHR request kicked off before a sync XHR request were not blocked (as on other browsers). This ensures that the sync request must complete first before those events are sent.
It is worded as it is because the developer would like people to report issues if they see any that might be caused by the change implementation.
Related docs work can be tracked in #34726