when there is only one data point then logarithmic scale fails to rescale the chart and the data point is out of the chart
and here how it looks on linear scale
for anyone who might be interested in - there is kinda workaround
you just need to unpin axis from zero (if you can do it in your visualization of course)
but still - the issue exists
I had found a way to customize this in the Lookml before but that option seems to have gone away. Really doesn't make sense that it CAN be logarithmic but the Looker UI prevents it. Hoping this issue can get some traction.
For me the issue actually is slightly different after reading your original post closer - Stacked Columns have the radio buttons for "Linear" and "Logarithmic" Greyed out..