When the user is customizing an exiting Query Tiles widget, they can delete some tiles on the configuration screen, making it lose tiles on the actual widget and sometimes having the effect of making the last tile lose its title.
To fix that, we need to call the method to reset the number of tiles from a configuration data, and the method to validate the data when the user clicks to cancel the customization.
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Summary of the pull request
When the user is customizing an exiting Query Tiles widget, they can delete some tiles on the configuration screen, making it lose tiles on the actual widget and sometimes having the effect of making the last tile lose its title.
To fix that, we need to call the method to reset the number of tiles from a configuration data, and the method to validate the data when the user clicks to cancel the customization.
References and relevant issues
Detailed description of the pull request / Additional comments
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