When editing a scheduled task with a schedule, and trying to change that schedule, users may notice the UI report the following message:
Uncaught TypeError Cannot read property 'loading' of null
This has been noticed on various task types when trying to change the schedule from hourly to daily or weekly to monthly and then clicking the Save button.
After the error occurs, the UI may not refresh the task settings correctly and the Discard button may not appear to function properly.
Another side effect is the dialog to confirm discarding changes may not render in the correct position or not be visible entirely.
Despite the UI errors, the original changes that were attempted to be saved appear to be persisted correctly.
There is no option to prevent the UI error. However recovery is relatively simple.
Use the browser refresh button to refresh the entire Nexus UI. After that the current state of the task settings should render correctly.