164606 2016-11-10 12:13:57 -0800 Dynamic changes to backdrop filter inside opacity behave incorrectly 2023-09-19 19:12:04 -0700 1 1 1 Unclassified WebKit Layout and Rendering Safari Technology Preview All macOS 10.12 RESOLVED CONFIGURATION CHANGED InRadar P2 Normal --- 1 mstange webkit-unassigned dino graouts mattwoodrow simon.fraser webkit-bug-importer oldest_to_newest 1249902 0 294396 mstange 2016-11-10 12:13:57 -0800 Created attachment 294396 testcase Steps to reproduce: 1. Open the attached testcase. 2. Click the button twice. Expected results: The initial state of the page should appear the same as the state after clicking the button twice. Actual results: The second click on the button turns the element with the backdrop filter white. On page load it was gray. I don't actually know what the correct behavior here is, but it should at least be consistent. 1250271 1 webkit-bug-importer 2016-11-11 10:07:54 -0800 <rdar://problem/29220956> 1978534 2 mattwoodrow 2023-09-19 19:12:04 -0700 This no longer reproduces. 294396 2016-11-10 12:13:57 -0800 2016-11-10 12:13:57 -0800 testcase backdrop-filter-inside-opacity-dynamic-update.html text/html 726 mstange PCFET0NUWVBFIGh0bWw+CjxtZXRhIGNoYXJzZXQ9InV0Zi04Ij4KPHRpdGxlPkJyb2tlbiBkeW5h bWljIHVwZGF0ZSBvZiAtd2Via2l0LWJhY2tnZHJvcC1maWx0ZXIgaW5zaWRlIG9wYWNpdHk8L3Rp dGxlPgo8c3R5bGU+Cgpib2R5IHsKICBtYXJnaW46IDA7Cn0KCiNvdXRlciB7CiAgaGVpZ2h0OiAy MDBweDsKICBvcGFjaXR5OiAwLjU7CiAgYmFja2dyb3VuZDogYmxhY2s7Cn0KCiNpbm5lciB7CiAg aGVpZ2h0OiAxMDBweDsKfQoKPC9zdHlsZT4KCjxkaXYgaWQ9Im91dGVyIj4KICA8ZGl2IGlkPSJp bm5lciIgc3R5bGU9Ii13ZWJraXQtYmFja2Ryb3AtZmlsdGVyOiBvcGFjaXR5KDEpOyI+PC9kaXY+ CjwvZGl2PgoKPHA+PGlucHV0IHR5cGU9ImJ1dHRvbiIgdmFsdWU9IlRvZ2dsZSAtd2Via2l0LWJh Y2tkcm9wLWZpbHRlciBiZXR3ZWVuIG9wYWNpdHkoMCkgYW5kIG9wYWNpdHkoMSkiIG9uY2xpY2s9 InRvZ2dsZSgpIj48L3A+Cgo8c2NyaXB0PgoKbGV0IGN1cnJlbnRCYWNrZHJvcE9wYWNpdHlWYWx1 ZSA9IDE7CgpmdW5jdGlvbiB0b2dnbGUoKSB7CiAgY3VycmVudEJhY2tkcm9wT3BhY2l0eVZhbHVl ID0gMSAtIGN1cnJlbnRCYWNrZHJvcE9wYWNpdHlWYWx1ZTsKICBkb2N1bWVudC5nZXRFbGVtZW50 QnlJZCgnaW5uZXInKS5zdHlsZS5XZWJraXRCYWNrZHJvcEZpbHRlciA9IGBvcGFjaXR5KCR7Y3Vy cmVudEJhY2tkcm9wT3BhY2l0eVZhbHVlfSlgOwp9Cgo8L3NjcmlwdD4K