collaps-o-matic incompatible with insert-html-snippet plugin

you have an ancient version of jQuery being force-loaded by your theme or a plugin:

<script type='text/javascript' src='https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js?ver=4.1.1'></script>

Hi Baden,

I have forward your answer to the theme developer support and waiting to an answer from them.

What I do not understand is, that if I deactivate the Instert html snippet plugin (where on this page no code snippets are in use), then it works perfect.

So what does this have to do with your suggestion? Hmm – strange….

Alex

Ahoy!
After reading your support thread on Insert Html Snippet where where a bit surprised with your comment:

I also asked collaps-o-matic support, but they did not answered about this problem so far.

Your issue has nothing to do with our plugin. If you would like to read more about your issue, here is a well-written article that explains the issue in detail: https://msyk.es/blog/prevent-jquery-wordpress-theme/

We are marking this issue as resolved, and wish you the best of luck getting the support you need.

Hi Baden,
thank you for supporting me.

Well it is not easy to find out who would be helpful in this case. I was just tying to get help in case of collaps function is not working or would be disturbed from the other plugin.

Thanks,
Alex

WordPress Troubleshooting 101

1. Disable the current theme.
2. Activate a default theme such as TwentyXXX.
3. Test. If the problem has gone, you know the theme is causing issues.
4. De-activate all plugins
5. Test. If the problem has gone, you know one of the plugins is causing the issue.
6. Re-activate each of the plugins individually. Test.
7. When the problem returns you have found the problem plugin

https://www.problogger.net/archives/2011/02/09/how-to-troubleshoot-wordpress/

Hi Baden,

I just have now used your instructions and found out follwoing:

I used “theme test drive” to enable twentiy fifteen theme and there it is working perfect.

You have been right with your suggestion and I need now to pass this information to the theme developer.

MANY THANKS AGAIN
Alex

Hi Baden,

just to be informed. The problem seems to be solved now in case the theme developer provided me with following code which has been placed into the header section of the theme.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<!-- load jQuery 2.1.3 -->
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript">
var jQuery_2_1_3 = $.noConflict(true);
</script>

Thanks for helping to solve this issue.

Best regards,
Alex