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-rw-r--r--app/javascript/flavours/glitch/components/modal_root.js15
1 files changed, 11 insertions, 4 deletions
diff --git a/app/javascript/flavours/glitch/components/modal_root.js b/app/javascript/flavours/glitch/components/modal_root.js
index e73ef8d12..f9877d5ea 100644
--- a/app/javascript/flavours/glitch/components/modal_root.js
+++ b/app/javascript/flavours/glitch/components/modal_root.js
@@ -62,15 +62,22 @@ export default class ModalRoot extends React.PureComponent {
     } else if (!nextProps.children) {
       this.setState({ revealed: false });
     }
-    if (!nextProps.children && !!this.props.children) {
-      this.activeElement.focus({ preventScroll: true });
-      this.activeElement = null;
-    }
   }
 
   componentDidUpdate (prevProps) {
     if (!this.props.children && !!prevProps.children) {
       this.getSiblings().forEach(sibling => sibling.removeAttribute('inert'));
+
+      // Because of the wicg-inert polyfill, the activeElement may not be
+      // immediately selectable, we have to wait for observers to run, as
+      // described in https://github.com/WICG/inert#performance-and-gotchas
+      Promise.resolve().then(() => {
+        this.activeElement.focus({ preventScroll: true });
+        this.activeElement = null;
+      }).catch((error) => {
+        console.error(error);
+      });
+
       this.handleModalClose();
     }
     if (this.props.children) {