Update: The issue is reproducing on our local machines as well, not only VM's, while reproducing it's important to remove the postSigningData and let the installer add it if possible.
Bug 1538106 Comment 5 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Update: The issue is reproducing on our local machines as well now, not only VM's, while reproducing it's important to remove the postSigningData and let the installer add it if possible.