Emulator

Game Name?

No specific game, but the afflicted play Naruto: Gekitou Ninja Taisen! 4.

Game ID? (right click the game in the game list, Properties, Info tab)

G4NJDA

MD5 Hash? (right click the game in the game list, Properties, Verify tab, Verify Integrity button)

049525a944c8fa158f752bc71a3441f4

What's the problem? Describe what went wrong.

The afflicted have made use of these two offbrand GC Adapters, one each.

https://www.amazon.com/Switch-Gamecube-Controller-Adapter-Nintendo/dp/B07Q459FBQ/ref=sr_1_1?dchild=1&keywords=y+team+gamecube+adapter&qid=1594254092&sr=8-1

https://www.amazon.com/gp/product/B07JM8MVLK/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Upon Dolphin Dev version 5.0-12263 being released, these two adapters have ceased functioning on Dolphin. The adapters are confirmed to function properly in prior versions/other non-main Dolphin builds.

What steps will reproduce the problem?

Update Dolphin Dev version to (or beyond) 5.0-12263

Is the issue present in the latest development version? For future reference, please also write down the version number of the latest development version.

The issue first manifested in version 12263, and is still present as of Dev version 5.0-12278

Is the issue present in the latest stable version?

No