Disclaimer: I'm the current MyPaint main developer/maintainer, but I don't do the Debian packaging, nor am I in any capacity involved in decisions about packages in Ubuntu.
Full details and consequences of this bug: v2.0.0 was shipped with svg icons, most of which had been working fine for 6+ years and had not been updated in that time. Some of these icons make use of <use> elements (clones, in Inkscape terms), but not all declared the xlink namespace, used to reference the items in the <use> tags. The backend that renders the icons is librsvg2. Up until librsvg 2.47[2] the missing xlink namespace declarations had no impact, and the icons were rendered correctly regardless. With librsvg >=2.47 those same icons will not be rendered at all, and attempting to do so will throw an exception. Now the real problem here is not that the icons are not rendering, although that does hamper usability. The real problem is that one of the problematic icons makes the "frame tool" (setting/configuring a canvas outline) virtually unusable. The invalid icon for that tool causes an exception that leads to an incomplete setup, causing further exceptions when moving the cursor over the canvas, until you switch to another mode. The problem was first reported on the MyPaint irc channel 2020-03-12. It was initially addressed that same evening, then finalized on 2020-03-17 (as the icon sheet and export process were reworked). As previously indicated by Shane, the problem is in the mypaint-data package[3], where the invalid icons are. All problematic icons can be fixed by adding the attribute xmlns:xlink="https://www.w3.org/1999/xlink"; to the <svg> tag. To prevent the pseudo-crash when using the frametool, only this icon needs fixing: /usr/share/icons/hicolor/scalable/actions/mypaint-frame-symbolic.svg To prevent the crash, and make all icons show up in the interface, these icons need fixing: /usr/share/icons/hicolor/24x24/actions/mypaint-frame-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-view-pan-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-object-move-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-view-mirror-horizontal-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-layers-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-view-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-view-fit-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-view-zoom-more-symbolic.svg /usr/share/icons/hicolor/24x24/actions/mypaint-view-mirror-vertical-symbolic.svg /usr/share/icons/hicolor/scalable/actions/mypaint-frame-symbolic.svg /usr/share/icons/hicolor/scalable/actions/mypaint-object-move-symbolic.svg /usr/share/icons/hicolor/scalable/actions/mypaint-view-symbolic.svg /usr/share/icons/hicolor/scalable/actions/mypaint-view-fit-symbolic.svg /usr/share/icons/hicolor/scalable/actions/mypaint-view-zoom-more-symbolic.svg Creating a patch that updates only these icons is not difficult, though it might be better to just update the package to the latest packaged version (referenced by Shane). For users who are affected by this (i.e, anyone who uses the frame tool), particularly those who do not use the 1.x mode by default, I would recommend using the latest official appimage release[4] for the time being. [1] https://wiki.ubuntu.com/StableReleaseUpdates [2] https://gitlab.gnome.org/GNOME/librsvg/-/blob/3661cee1cd2781cd31ac096be7e157f2e661b36b/NEWS#L215-232 [3] https://packages.ubuntu.com/focal/mypaint-data [4] https://github.com/mypaint/mypaint/releases/download/v2.0.1/MyPaint-v2.0.1.AppImage -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1878578 Title: Some menu icons are missing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mypaint/+bug/1878578/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
