Append "pane" class to td elements in widgets (such as Next Executions) the same style as the standard ones in "Build Queue" and "Build Executor Status".
What Operating System are you using (both controller, and any agents involved in the problem)?
SmartOS
Reproduction steps
Have a Jenkins installed without the plugin parameterized-scheduler-plugin installed.
Install just next-executions-plugin
You will lose the current build status widget in the left dashboard and next execution will not display neither.
Expected Results
parameterized-scheduler-plugin should not became a mandatory plugin to use next-execution
And next-execution should never be able to hide the build status queue
Actual Results
Both build status queue and next execution won't be available until you install parameterized-scheduler-plugin