STR: 1. Open about:memory. 2. Especially in portrait mode (but also even in landscape mode), a number of entries will be cut off at the screen edge. 3. Try scrolling horizontally. Expected: about:memory scrolls horizontally, allowing you to read the full title of longer entries. Actual: Doesn't work, only vertical scrolling is possible. Mozregression points to the build in which APZ went live on Nightly.

What phone and OS version? It works for me as expected in currently nightly on a Nexus 4 in both portrait and landscape.

Samsung Galaxy S3 Mini, Android 4.1.2. Just to make sure we're really talking about the same thing, this is what I'm referring to: (see screenshot)

(In reply to Jan Henning [:JanH] from comment #2) > Created attachment 8751986 [details] > about_memory horizontal scrolling.png > > Samsung Galaxy S3 Mini, Android 4.1.2. > Just to make sure we're really talking about the same thing, this is what > I'm referring to: (see screenshot) Ah, okay, The Memory Process div does not scroll for me either. I'll look into it.

Tested using: Device: Galaxy S6 Edge (Android 5.1.1) Build: Firefox for Android Nightly 49.0a1(2016-05.24) Aurora - 48.0a2(2016-05-23)

Firefox for desktop also has this issue, and the same fix is applicable to chrome://global/content/aboutMemory.css

Not worth uplifting, this can ride the trains. Alfred, please feel free to file a new bug for the desktop version.

1280615 created for desktop

In the future please use r?njn for changes to about:memory.

I'm changing the status to verified fixed considering that the bug is verified.