I can confirm this bug. Bisection: Bug 1655101 - Padded<T,PaddedSize> to paper over mingw-32's smaller sizeof(std::string). r=gfx-reviewers,aosmond Differential Revision: https://phabricator.services.mozilla.com/D197543
Bug 1883225 Comment 5 Edit History
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I can confirm this bug. Bisection: Bug 1655101 - Padded<T,PaddedSize> to paper over mingw-32's smaller sizeof(std::string). r=gfx-reviewers,aosmond Differential Revision: https://phabricator.services.mozilla.com/D197543 Release 122 (Good): https://share.firefox.dev/48Dc8NB Nightly 3Mar2024 D2d-canvas (Bad): https://share.firefox.dev/3wDpigB Nightly 3mar2024 gpu-canvas (Bad): https://share.firefox.dev/3uUgfqV