For the original report,please look at:

https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1004853

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I am on Ubuntu12.10 Quantal 64bit.

In qtcreator is in menu -> Tools -> Options... -> Help

the possibility to adapt the font size of the qtcreator help browser.

This do not work.

Any adaption of the font size has an effect to the help browser(after applying and ok).

Even a newstart of qtcreator does not do it.

Other fonts even do not have the abbility to get their size chanched.

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The same for the editor font size. Also accesible over tools -> Options.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: qtcreator 2.5.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.4.0-3.8-generic 3.4.0
Uname: Linux 3.4.0-3-generic x86_64
ApportVersion: 2.1-0ubuntu1
Architecture: amd64
Date: Sat May 26 12:39:31 2012
ExecutablePath: /usr/bin/qtcreator
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120510)
ProcEnviron:
PATH=(custom, no username)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: qtcreator
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors:
gnome-session[2002]: WARNING: Session 'ubuntu' runnable check failed: Exited with code 1
gnome-session[2002]: WARNING: Could not launch application 'gdu-notification-daemon.desktop': Unable to start application: Failed to execute child process "/usr/lib/gnome-disk-utility/gdu-notification-daemon" (No such file or directory)
(firefox:2717): LIBDBUSMENU-GTK-CRITICAL **: dbusmenu_menuitem_property_set_shortcut: assertion `gtk_accelerator_valid(key, modifier)' failed