After updating from 2.7.1 to 2.7.2 getting two errors in console: [SteamVR] Interface Not Found (105) and controllers does not appear anymore after launching Simple Sample scene. Tested with Oculus CV1 and Valve Index.
Interactions_Example does not work at all in 2.7.2
Using Unity 2019.4.18f1 and Legacy VR mode.
To verify I made two clean projects with same settings. Imported 2.7.1 into first project and 2.7.2 into second project. First project works fine when second throwing this error. Tested with SteamVR 1.15.19

Full error text:

UnityEngine.Debug:LogWarning(Object)
Valve.VR.SteamVR:ReportError(EVRInitError) (at Assets/SteamVR/Scripts/SteamVR.cs:244)
Valve.VR.SteamVR:CreateInstance() (at Assets/SteamVR/Scripts/SteamVR.cs:182)
Valve.VR.SteamVR:Initialize(Boolean) (at Assets/SteamVR/Scripts/SteamVR.cs:103)
Valve.VR.SteamVR_Behaviour_Pose:OnEnable() (at Assets/SteamVR/Input/SteamVR_Behaviour_Pose.cs:88)