Thanks everyone. I can reproduce it now, even without ubuntu-dock. Looks like it is:
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3969 but there are two flavours: ----- This is "normal" when opening the overview ---- May 24 16:15:02 kab gnome-shell[5789]: value "nan" of type 'gfloat' is invalid or out of range for property 'x' of type 'gfloat' May 24 16:15:02 kab gnome-shell[5789]: value "nan" of type 'gfloat' is invalid or out of range for property 'y' of type 'gfloat' May 24 16:15:02 kab gnome-shell[5789]: JS ERROR: Exception in callback for signal: shown: Error: Wrong type number; float expected. But it's out of range: -Infinity _init/GObject.Object.prototype.set@resource:///org/gnome/gjs/modules/core/overrides/GObject.js:553:16 _easeActor@resource:///org/gnome/shell/ui/environment.js:155:15 init/Clutter.Actor.prototype.ease@resource:///org/gnome/shell/ui/environment.js:294:19 _syncWorkspacesActualGeometry@resource:///org/gnome/shell/ui/workspacesView.js:728:21 _init/this._overviewShownId<@resource:///org/gnome/shell/ui/workspacesView.js:396:18 _emit@resource:///org/gnome/gjs/modules/core/_signals.js:114:47 _showDone@resource:///org/gnome/shell/ui/overview.js:604:14 onComplete@resource:///org/gnome/shell/ui/overview.js:589:36 _makeEaseCallback/<@resource:///org/gnome/shell/ui/environment.js:85:13 _easeActor/<@resource:///org/gnome/shell/ui/environment.js:168:64 ----- This appears to be the bug(?) ----- May 24 16:15:07 kab gnome-shell[5789]: value "nan" of type 'gfloat' is invalid or out of range for property 'x' of type 'gfloat' May 24 16:15:07 kab gnome-shell[5789]: value "nan" of type 'gfloat' is invalid or out of range for property 'y' of type 'gfloat' May 24 16:15:07 kab gnome-shell[5789]: JS ERROR: Error: Wrong type number; float expected. But it's out of range: -Infinity _init/GObject.Object.prototype.set@resource:///org/gnome/gjs/modules/core/overrides/GObject.js:553:16 _easeActor@resource:///org/gnome/shell/ui/environment.js:155:15 init/Clutter.Actor.prototype.ease@resource:///org/gnome/shell/ui/environment.js:294:19 _syncWorkspacesActualGeometry@resource:///org/gnome/shell/ui/workspacesView.js:728:21 animateToOverview@resource:///org/gnome/shell/ui/workspacesView.js:577:18 animateToOverview@resource:///org/gnome/shell/ui/viewSelector.js:278:33 _animateVisible@resource:///org/gnome/shell/ui/overview.js:582:27 show@resource:///org/gnome/shell/ui/overview.js:568:14 toggle@resource:///org/gnome/shell/ui/overview.js:691:18 _initializeUI/<@resource:///org/gnome/shell/ui/main.js:238:22 ** No longer affects: gnome-shell (Ubuntu) ** Package changed: gnome-shell-extension-ubuntu-dock (Ubuntu) => gnome- shell (Ubuntu) ** No longer affects: gnome-shell-extension-dash-to-panel (Ubuntu) ** Summary changed: - Overview sometimes fails to appear or disappear in 21.04 + Overview sometimes fails to appear or disappear in gnome-shell 3.38.4 ** Changed in: gnome-shell (Ubuntu) Status: Confirmed => In Progress ** Also affects: gnome-shell via https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3969 Importance: Unknown Status: Unknown ** Also affects: gnome-shell (Ubuntu Impish) Importance: High Assignee: Daniel van Vugt (vanvugt) Status: In Progress -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell-extension-ubuntu-dock in Ubuntu. https://bugs.launchpad.net/bugs/1922353 Title: Overview sometimes fails to appear or disappear in gnome-shell 3.38.4 Status in GNOME Shell: Unknown Status in gnome-shell package in Ubuntu: In Progress Status in gnome-shell source package in Hirsute: Confirmed Status in gnome-shell source package in Impish: In Progress Bug description: When I press the "windows" or "options" or "super" key a list of running applications (like alt-tab) and a text window appears. I can choose from the running applications or write a command into the text window. After I chose an application or press ESC all this disappear and I can do my thing. Since trying 21.04 sometimes this 1. does not appear properly - there is no visible text window 2. does not disappear - despite what I click on or what keys do I press this never disappear so I can not use my running applications or start anything new even from the menu. I have to log out and in to break this. Disabling my gnome-shell extensions or using xorg instead of wayland does not helps. Since upgrading this morning this happens every time I press Super, not just occasionally, thus making my desktop unusable. ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: gnome-shell 3.38.4-1ubuntu1 ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7 Uname: Linux 5.11.0-13-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu61 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Fri Apr 2 14:07:39 2021 DisplayManager: gdm3 InstallationDate: Installed on 2020-03-19 (378 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) RelatedPackageVersions: mutter-common 3.38.4-1ubuntu1 SourcePackage: gnome-shell UpgradeStatus: Upgraded to hirsute on 2021-03-06 (27 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1922353/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp