Plotting bars: 'bargap: 0' removes first bar

[elv1s42]

When using layout option 'bargap: 0' first bar disappears.
Please take a look at this example: https://jsfiddle.net/57b7stne/1/
I am plotting the same trace with two different layouts, first one works fine ('bargap: 0.01'), the second one works wrong ('bargap: 0', first bar disappears)

[elv1s42]

With 'histogram' trace type everithing works fine

[etpinard]

Thanks very much for the report.

This bug is in fact a regression from v1.2.0.

• working version with v1.2.0 : https://jsfiddle.net/57b7stne/3/
• git compare: v1.2.0...v1.3.0

[etpinard]

Ok. bargap: 0 actually spits out an error:

On it.