The Magnifier control on the main canvas status bar does not seem to magnify, but rather changes the effective scale causing a fetch of the WMS layer. This is a problem when this exceeds the servers maximum scale. Setting the scale at X and the magnifier at 200% behaves identically to the scale at X/2 and magnifier at 100%. When I adjust the magnifier, I see the blue progress bar associated with fetching tiles. Ideally the magnifier would allow you to magnify with pixelation, to get some separation of features while seeing a degraded background map image. The lock seems to only disable manually changing the scale but does not keep the WMS layer from being fetched at a magnified scale which can result in failure and a blank background. The documentation indicates that the lock should allow magnification without changing scale. This seems to not be the case on USGS WMS/WMTS layers. Has anyone else experienced this or understand what may be causing it?
I am using Windows 10 and QGIS 3.18.3. I have seen this behavior since version 2. Thanks, Stewart
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