#393 don't enable offscreen by default with Firefox

Author: totaam

html5/connect.html

@@ -803,7 +803,7 @@ <h4 class="panel-title">Advanced options</h4>
 
         function update_offscreen() {
           const ssl_enabled = document.getElementById("ssl").checked;
-          const offscreen = getboolparam("offscreen", XpraOffscreenWorker.isAvailable(ssl_enabled));
+          const offscreen = getboolparam("offscreen", XpraOffscreenWorker.isAvailable(ssl_enabled) && !Utilities.isFirefox());
           document.getElementById("offscreen").checked = offscreen;
           const offscreen_available = XpraOffscreenWorker.isAvailable(ssl_enabled);
           const offscreen_input = document.getElementById("offscreen");

html5/index.html

@@ -650,7 +650,7 @@ <h2>Xpra Bug Report</h2>
         }
         const sound = getboolparam("sound", true) || null;
         const audio_codec = getstrparam("audio_codec") || null;
-        const offscreen = getboolparam("offscreen", true);
+        const offscreen = getboolparam("offscreen", XpraOffscreenWorker.isAvailable(https) && !Utilities.isFirefox());
         const encoding = getstrparam("encoding") || null;
         const bandwidth_limit = getintparam("bandwidth_limit", 0) || 0;
         const action = getstrparam("action") || "connect";