Some users have reported problems invoking the IME when using RStudio 0.99 with the Fctix input framework.
On Linux, RStudio uses a bundled version of Qt 5 that does not include support for Fctix by default. To resolve the problem, you can add Fctix's Qt 5 plugin from your system's Qt 5 installation to RStudio's platform input plugin folder:
$ sudo ln -s /usr/lib/$(dpkg-architecture -qDEB_BUILD_MULTIARCH)/qt5/plugins/platforminputcontexts/libfcitxplatforminputcontextplugin.so /usr/lib/rstudio/bin/plugins/platforminputcontexts/
If your system doesn't have
/usr/lib/(architecture)/qt5, you may need to add a system installation of Qt 5 (look at your specific Linux distribution's instructions). You can also find the source for the FCtix Qt 5 plugin on Github; an alternative method is to build the plugin yourself and copy it to
Thanks to this post for supplying the workaround.