macOS 10.15.4 beta 1 gives back DRM to Polaris Ellesmere

I installed 10.15.4 Beta 1 and the DRM behaviour with my Sapphire RX 580 Pulse 8GB is now identical to the one with my Vega 56:

My setup in a few words: Gigabyte Aorus z390 Pro / i9-9900K / OpenCore 0.5.4 / Lilu 1.4.1 / WEG 1.3.6

iMacPro1,1:

No shikigva flag needed. Results:

• Netflix in Safari Works
• Amazon Prime in Safari Works
• AppleTV works
• SideCar does not (since iGPU must be turned off from UEFI)

iMac19,1:

Change shikigva to 80 like with the Navi / Vega cards. Results:

• Netflix in Safari Works
• Amazon Prime in Safari does not work (crashing WebKit)
• AppleTV works
• SideCar works (iGPU enabled in UEFI and set as headless)

Whoever wants to test other shikigva flags is welcome to do and report their findings.