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-rw-r--r--ext/fg/js/frontend.js6
1 files changed, 4 insertions, 2 deletions
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index da620136..e3988c94 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -399,8 +399,10 @@ class Frontend {
this._clearSelection(true);
this._popupEventListeners.removeAllEventListeners();
this._popup = popup;
- this._popupEventListeners.on(popup, 'framePointerOver', this._onPopupFramePointerOver.bind(this));
- this._popupEventListeners.on(popup, 'framePointerOut', this._onPopupFramePointerOut.bind(this));
+ if (popup !== null) {
+ this._popupEventListeners.on(popup, 'framePointerOver', this._onPopupFramePointerOver.bind(this));
+ this._popupEventListeners.on(popup, 'framePointerOut', this._onPopupFramePointerOut.bind(this));
+ }
this._isPointerOverPopup = false;
}