I wanted to report an issue I ran into on v5.2e for mixed-gen ETH mining on one XFX RX 5700 8GB + one XFX RX 480 8GB + one MSI RX 480 8GB on Ubuntu 18.04.4 LTS (via minerstatOS) with amdgpu-pro v19.30 drivers.  When I upgraded to v5.2e, I saw my RX 5700 take approximately an hour to build its DAG file, and then yield 0 hashrate, and the two RX 480s only produced about a third of their normal hashrate.  I previously saw the same behavior with all PhoenixMiner v5.1x versions, as well.

Rolling back to v5.0e immediately resolves the issue without a reboot.  I have used a few versions of the PhoenixMiner for about ten months on this mixed-gen rig without issue, so this has been something introduced after v5.0e.  In case it's any help, I am including a few log excerpts, though I never saw any suspicious messages or error logs to report.