value for panel drawn when it should be hidden

[yellowpattern]

In grafana/grafana#44351 I reported an issue that I thought was grafana's (8.3.3) problem where when the panel is too small to fit both the title of the panel and the text value for the panel, the text value for the panel is displayed over the top of other objects on the screen.

Back in grafana 6.5 (and an older version of singlestat-math), when the panel was resized to be too small to show the value, only the title would be visible (correct behaviour) because the rendering location for the text value was not within the rectangle of the panel.