disable wayland again, but allow enabling it

Will add an entry to the known issues page.

qt/aqt/__init__.py

@@ -477,6 +477,14 @@ def _run(argv: Optional[List[str]] = None, exec: bool = True) -> Optional[AnkiAp
         profiler = cProfile.Profile()
         profiler.enable()
 
+    if (
+        getattr(sys, "frozen", False)
+        and os.getenv("QT_QPA_PLATFORM") == "wayland"
+        and not os.getenv("ANKI_WAYLAND")
+    ):
+        # users need to opt in to wayland support, given the issues it has
+        os.environ["QT_QPA_PLATFORM"] = "xcb"
+
     # default to specified/system language before getting user's preference so that we can localize some more strings
     lang = anki.lang.get_def_lang(opts.lang)
     anki.lang.set_lang(lang[1])