Several irritating issues

Several irritating issues

I have the following strange issues, and would like to know solutions:

  1. sometimes resizing of components in a dashboard does not work, why?
  2. sometimes I cannot edit a component in a dashboard, the 3 dots do not appear, especially at the top of my screen, why?
  3. sometimes I cannot clone a component while others in the same dashboard can be cloned, why and how to correct

in histograms like this the 17M shows higher then the column of 199M, how to correct?