I'm not the developer doing OpenComposite (which is the OpenVR to OpenXR bridge).
I do OpenXR Toolkit, which is another add-on to improve OpenXR features.
Not quite sure what the issue being discussed is, and whether OP is using OpenXR Toolkit at all.
Please provide some more details to make this actionable. Try without OpenXR Toolkit if you have it installed, to isolate whether the issue is with OpenComposite or OpenXR Toolkit. If the issue is seen without OpenXR Toolkit, then you need to report it to the OpenComposite developers instead.
Edit: my best guess, given the lack of any information at all in this thread and the other threads linked, is that either 1) the issue is specific to OpenComposite, or 2) it is caused by FFR in the OpenXR Toolkit.
If the issue is 1) there is nothing I can do about it. If the issue is 2) there is a whole thread about asking the developer of this game to add 2 function calls to their engine to make it easier to achieve FFR (and even DFR):
Last time I checked on that thread, the developer did not want to commit to making the necessary change. This change would likely resolve the issue, if the issue is indeed 2).