Can confirm with Samsung internet on LineAgeOS (Thanks YalpStore). Ok with some other browser.

Seems not related to template : https://demo.sondages.me/953474

Else about detection system : It's done using a SESSION var and an hidden input var : if it's broken : all submit can be broken.

Edit : name of the var (and input) LEMpostKey …

Thanks for checking. I had some success with tapping in the free html canvas after watching the video and then answering the question and then hitting forward/submit.

This prevention detection should be optional.

It's the checkIfUseBrowserNav() function:
https://github.com/LimeSurvey/LimeSurvey/blob/5955f725682cfc5b0279334a648a3d9f95a401b0/application/helpers/SurveyRuntimeHelper.php#L722

Let's say the Samsung Internet Browser executes an external video player and then returns to the browser.
I'm not that into mobile platforms. But a setting to disable this browser button detection would help.

This detection cannot be optional. As said, if the detection jumps in the page has not been properly submitted (which is usually the case if the user uses the browser buttons instead of page navigation)-.
So if your applet triggers that issue then the page is not properly POSTed.

#1 This kind of detection is optional in other survey tools.
#2 It's no applet, it's the video tag handling by the Samsung Internet Browser.

But i will inform the forum user about the closing.

I am not able to reproduce this on a Samsung smartphone (S5) using the above example link.

Strange ? With SamsungInternet ?

You click to play the video ?

Else : i think it's browser unfixable issue but , strange you can't reproduce. Maybe an update of SamsungInternet ?

Yeah, did everything (using the Samsung browser) - played video, normal and fullscreen. No problems.

I don't think the URL will be able to show the bug anmore.
The threadstarter already patched the installation and removed the browser button detection.

/$this->checkIfUseBrowserNav(); // Check if user used browser navigation, or relaoded page/

Ok, mine still valid.
I add some tracevar when find time to understand what happen exactly.

(and set this topic to «acknowledged» / «won't fix»)

I have the same problem in 2020! Samsung phones cant participate on my survey! Phone is Samsung S20 and Samsung S7 using Samsung Internet Browser.
Here is my survey.

Same problem here.
After you start the video, you can't go on because it says that you have tried to use the browser navigation.

I must confirm same problem.
It exits again since last update of Samsung internet (12.1.2.5)

Everything works fine with short videos (up to ca. 15 sec.)
The problem occurs with longer videos only (20 sec. or longer)
I tested it many times with longer and shorter videos.

You're using an outdated version of LimeSurvey. Please update to the latest version and check if the bug can still be reproduced. Thank you.

For information ,

There are issue with empty url in img, i need to report it.

And empty img src (src='') : survey break ( this send a request to current url …)

Hello jelo,
I checked this with the latest version and could not reproduce, so this is most likely fixed for good.
Therefore, I am closing this issue. If you still can reproduce the issue using the latest version, please feel free to re-open the issue.
Thank you!

c_schmitz