title actions produce error in IE11

Are you requesting a feature, reporting a bug or asking a question?

Bug

What is the current behavior?

When opening page with survey in Internet Explorer 11, code in file src\knockout\components\action-bar\action-bar.ts (and probably same in src\knockout\components\progress\buttons.ts) in method ko.components.register(...) at line const container: HTMLDivElement = componentInfo.element.nextElementSibling; returns undefined container because IE do not expose nextElementSibling on comment nodes. ResponsivityManager then crashes at line this.resizeObserver.observe(this.container.parentElement);

What is the expected behavior?

Make code return container to pass to ResponsivityManager class

How would you reproduce the current behavior (if this is a bug)?

Go open page in IE 11 https://surveyjs.io/Examples/Library (you also need to polyfill object.assign and ResizeObserver)

Provide the test code and the tested page URL (if applicable)

Tested page URL: https://surveyjs.io/Examples/Library

Test code

your_code_here

Specify your

• browser: IE 11
• browser version: 11.0.9600.17498 update version 11.0.15
• surveyjs platform (angular or react or jquery or knockout or vue): jquery
• surveyjs version: 1.8.56

[tsv2013]

@digital88 We’ll check it @dmitrykurmanov Could you clarity the state of the issue? It is marked as related to v1.8.59 just has been released.

[mkopinsky]

I’m still getting a console error in IE 11 from this.

https://plnkr.co/edit/UGB9Rhq2Vp8mYwRF

Earlier I was getting a different stack trace from my app (rather than plunkr) which was showing action-bar.ts as part of the stack trace

When I view the same survey in a modern browser (chrome 92) I can see that it’s rendering an sv-action-bar even though it’s empty.

Normally I wouldn’t care about just a console error in IE 11. But my app is accessed through an unusually-configured embedded IE thing which throws these old school errors. And since each question has an sv-action-bar, the user has to click through this error once for each question in the survey