[reports] Problem with the precision and labels update

When you have an empty report and starts to work on it, the events that need a refresh, such as, the precision update, the experiment labels and so on do not work. These things only start to work smoothly when you refresh the page.

Steps to reproduce the issue:

• Create a new report;
• Add some experiments on it;
• Open the report;
• Add a table;
• Change the floating point precision (this will not work);
• Refresh the page (F5)
• Change the floating point precision (Now starts to work properly);