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-rw-r--r--ext/fg/js/popup.js6
1 files changed, 5 insertions, 1 deletions
diff --git a/ext/fg/js/popup.js b/ext/fg/js/popup.js
index d45c7c2a..9e9debd8 100644
--- a/ext/fg/js/popup.js
+++ b/ext/fg/js/popup.js
@@ -530,7 +530,11 @@ class Popup {
_getFrameParentElement() {
const defaultParent = document.body;
const fullscreenElement = DOM.getFullscreenElement();
- if (fullscreenElement === null || fullscreenElement.shadowRoot) {
+ if (
+ fullscreenElement === null ||
+ fullscreenElement.shadowRoot ||
+ fullscreenElement.openOrClosedShadowRoot // Available to Firefox 63+ for WebExtensions
+ ) {
return defaultParent;
}