update: I filed https://bugs.chromium.org/p/chromium/issues/detail?id=1285427 for the above-mentioned Chrome bug, and Alison clued me in that I need to be running Chrome with `--enable-blink-features=LayoutNGFlexFragmentation` (which enables the relevant-to-this-bug pieces of new fragmentation code). With that, Chrome matches my expectations on testcase 1, 2, and 3 here.
Bug 1743890 Comment 10 Edit History
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update: I filed https://bugs.chromium.org/p/chromium/issues/detail?id=1285427 for the above-mentioned Chrome bug, and Alison clued me in that I need to be running Chrome with `--enable-blink-features=LayoutNGFlexFragmentation` (which enables the relevant-to-this-bug pieces of new fragmentation code). With that, Chrome matches my expectations on testcase 1, 2, and 3 here (and serves as a reference case for the correct rendering of testcase 1).
update: I filed https://bugs.chromium.org/p/chromium/issues/detail?id=1285427 for the above-mentioned Chrome bug, and Alison clued me in that I need to be running Chrome with `--enable-blink-features=LayoutNGFlexFragmentation` (which enables the relevant-to-this-bug pieces of new fragmentation code). With that, Chrome matches my expectations on testcase 1, 2, and 3 here (and serves as a reference for the correct rendering of testcase 1).