@@ -368,6 +368,7 @@ export default class Bar {
     }
 
     update_progressbar_position() {
+        if (this.invalid) return;
         this.$bar_progress.setAttribute('x', this.$bar.getX());
         this.$bar_progress.setAttribute(
             'width',
@@ -389,6 +390,7 @@ export default class Bar {
     }
 
     update_handle_position() {
+        if (this.invalid) return;
         const bar = this.$bar;
         this.handle_group
             .querySelector('.handle.left')
Original file line number	Diff line number	Diff line change
`@@ -368,6 +368,7 @@ export default class Bar {`
`368`	`368`	`}`
`369`	`369`
`370`	`370`	`update_progressbar_position() {`
	`371`	`+ if (this.invalid) return;`
`371`	`372`	`this.$bar_progress.setAttribute('x', this.$bar.getX());`
`372`	`373`	`this.$bar_progress.setAttribute(`
`373`	`374`	`'width',`
`@@ -389,6 +390,7 @@ export default class Bar {`
`389`	`390`	`}`
`390`	`391`
`391`	`392`	`update_handle_position() {`
	`393`	`+ if (this.invalid) return;`
`392`	`394`	`const bar = this.$bar;`
`393`	`395`	`this.handle_group`
`394`	`396`	`.querySelector('.handle.left')`