Custom Report - Data in Vertical Bar graph not matching the Table report

I have an Matomo - On Premise setup and I have installed Custom report TRIAL Version to evaluate if it suffices our requirements.

I was able to create a TABLE Report for “Pageviews by hour for a given day” Screenshot for reference :

However, there are 3 issues :

  1. When I go to the the “Vertical Bar Graph” option using the Change Visualization option below the tabular report - it randomly picks some hours of the day and shows data - I was assuming it will show me a Bar diagram with 24 bars (1 for each hour)

  2. The hours in X-axis are in random order.

  3. Why can I not see ALL the Visualization options mentioned in the documentation like Sparkline - All I see now is Vertiacl Bar Diagram and PieChart

Check the screenshot for #1 and #2 for your reference :

Am I missing on something ?