HTC Vive Focus 3 controllers not visible

Operating system: Windows 10
Slicer version: 4.11.20210226
Expected behavior: Controllers visible during VR session
Actual behavior: Controllers not visible, but the ability to interact with the volume is present.

Hello everyone,

I initially tried to use SlicerVirtualReality with Slicer 5.2.2 and eventually managed to see my segmentation, but the image was strobing and visible only to one eye. I also had the issue with “the action manifest for slicerapp-real was not found” message, but downloading needed .json files, as suggested in another post, helped. Going back to Slicer 4.11.20210226 fixed the issue with the image.
However, neither in 5.2.2 nor in 4.11.20210226 I was able to see my controllers, even though in 4.11.20210226 I was able to interact with the scene as wall as fly around using the thumbstick. Switching the “Controller visible” option on and off did not help unfortunately.
My headset is HTC Vive Focus 3 with its original controllers.

Many thanks for any help in this regard!