I have a multi-band raster in the form of a GeoTIFF. The raster contains 4 bands. Band 2 has 27 unique values ranging from 151 - 281. I would like to display each value discreetly using the 'Paletted/Unique values' option in Band rendering. When I click 'classify' the correct values are displayed but when I apply and close the dialogue nothing is displayed in QGIS.
If I use 'Singleband Pseudocolor' it displays fine but I'd like to display discrete colours without having to go through each value and change the colour. What's going on here? Why is Paletted/Unique not working?