Sorry for the late reply, I didn't get email notification and just saw your answer today.
Indeed I have the same graphic card (Intel Graphics 530) as in the Qt bug tracker. I have the Dell driver installed, the latest it seems from their website (22.214.171.12464).
So you suggest to install the generic Intel Driver 15.46.02.4729 ? Or equivalently I guess, the 15.46.05.4771. I get some warnings from Intel that manufacturers (like Dell) may have customized the drivers and so that it is not advised to use Intel Generic Driver etc... Anyway, I tried uploading my driver with the Intel Generic one, and I got a message saying that I have already the latest drivers. I installed lastest version of CC but unfortunately I get the same issue...