To get rid of the rendering issues, you would need to increase the Web-Dashboard's <tileSize> (width & height), in the web-dashboards config.xml. The ghost images are no longer visible when the default size of 200x200 is increased to 500x500
Some users have noted that when firing up the web-dashboard, ghost images can appear when utilising an Active Gauge or Active Chart. An example of this rendering issue can be seen highlighted below:
A way to resolve this would be to edit the config.xml, within the web-server installation directory. This xml document can be located under the sub-directory called "config"
Linux path example:
/home/user/<web server directory>/config
Within the config.xml, change the default tile size for height & width to 500x500
NOTE: You would first of all NEED to stop the web-server from running before making any changes to the config.xml
After the amendments to the <tileSize> has been made, restart the web-server as you usually would. Now, you should see that the Active Gauges rendering issues have disappeared, no longer leaving any ghost images behind.