I'm seeing #1185 again in the latest v 9.1.2 downloadable from https://ghidra-sre.org/ and running the ./ghidraRun script on Ubuntu 18.04 desktop. I deleted my ~/.ghidra directory and tried again but still same issue.
Edit: I initially also instinctively deleted the ~/.ghidra directory, but this won't fix it as this seems to have to do with the User Agreement screen being shown before the GUI is fully loaded. And the state of User Agreement acceptance is saved in the ~/.ghidra directory.
I'm also seeing this on Ubuntu 18.04, using X.Org, with the latest public download from https://ghidra-sre.org (ghidra_9.1.2_PUBLIC_20200212.zip). Issue should be reopened, as while there is a workaround, there is still a bug present that confuses new users.
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1185 is still present. Starting a new version of Ghidra here always results in spaces missing from the GUI. Accepting the User Agreement and closing Ghidra and starting it again always fixes the issues.
Edit: I initially also instinctively deleted the ~/.ghidra directory, but this won't fix it as this seems to have to do with the User Agreement screen being shown before the GUI is fully loaded. And the state of User Agreement acceptance is saved in the ~/.ghidra directory.