[2.0 regression] GTiff: implict JPEG overviews don't always work
|Reported by:||Even Rouault||Owned by:||Even Rouault|
Reported as https://hub.qgis.org/issues/13536
When using a JPEG-compressed geotiff whose compressed tiles/strip are larger than 65536 bytes, getting subsampled data will generally always pick-up the first block due to a invalidation problem of the internal dataset.
This is a GDAL 2.0 problem