Here's a similar testcase where I'm using `filter` instead of `z-index` on the inline-level element that has a block-level child. In Firefox, the block-level child gets filtered as well. In Chrome, it does not.
Bug 1573990 Comment 1 Edit History
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Here's a similar testcase where I'm using `filter` instead of `z-index` on the inline-level element that has a block-level child. In Firefox and EdgeHTML, the block-level child gets filtered as well. In Chrome and Safari, it does not (so the "Can you see this text" orange area is visible/crisp there).