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Using Firefox 55, I tried with uMatrix 1.0.0 and 1.0.1rc1

However the option "Collapse placeholder of blocked elements" appears to be ignored. Regardless if you check or uncheck it, the placeholders of blocked elements are not collapsed, so you are left with blank placeholders littering the page.

Note that uBlock Origin has the same option, but uBlock Origin correctly collapses the blocked elements. Example page http://reddit.com

http://github.com/uBlockOrigin/uMatrix-issues/issues/2

Zombo
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    Please post screenshots to show the unwanted behaviour vs. the desired behaviour, and links so that others can try and reproduce the issue. – simlev Sep 20 '17 at 07:53
  • You could try to let the extension author know about this issue. – simlev Sep 20 '17 at 08:45
  • Did you see [this post](https://discourse.mozilla.org/t/support-umatrix/5131/18) where the answer was "There is a collapse button in the *all* cell, it will expand/collapse the subdomains for all the domains". – harrymc Sep 22 '17 at 15:33

1 Answers1

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There is no cosmetic filtering in uMatrix. uMatrix will collapse the DOM elements which match blocked resources. The blank area on Reddit is a div, there is no such thing as a secondary resource matching a div.

http://github.com/uBlockOrigin/uMatrix-issues/issues/2#issuecomment-333170623

Zombo
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