fixes a pretty subtle issue that occurs when requesting a cropped pla…

…ne that matches exactly a subblock location

src/main/java/ch/epfl/biop/formats/in/ZeissQuickStartCZIReader.java

@@ -816,7 +816,7 @@ public byte[] openBytes(int no, byte[] buf, int x, int y, int w, int h) throws F
             if (image.intersects(blockRegion)) {
                 RandomAccessInputStream stream = getStream(block.filePart);
 
-                if (image.equals(blockRegion)) {
+                if (image.equals(blockRegion) && blocks.size()==1) { // THE SECOND TEST IS NECESSARY BECAUSE OTHER BLOCKS CAN INTERSECT!
                     // Best case scenario
                     return readRawPixelData(
                             block,
@@ -840,6 +840,8 @@ public byte[] openBytes(int no, byte[] buf, int x, int y, int w, int h) throws F
 
                     Region tileInBlock = new Region(regionRead.x-blockRegion.x, regionRead.y-blockRegion.y, regionRead.width, regionRead.height);
 
+
+
                     byte[] rawData = readRawPixelData(
                             block,
                             compression,