Suhosin causes menu items to be disabled

Thanks for reporting, I'm wondering whether you managed to reproduce the issue and can give a step by step instruction to reproduce it?

I am not able to reproduce this. See the screenshots. c1, c2, and c3 are views. They have child links which are content.

Are the views disabled by any chance?

If you go into the edit page for the link, enable and save it there then does the enabled status stick?

If so then we'd know that it's something to do with the link list UI.

I've had a similar issue on a D7 site which turned out to be caused by PHP's max_input_vars limit being exceeded. Although that was a very large menu, so it's less likely to be this in your case unless your max_input_vars is very low.

We experienced the same issue here. But only on the staging server (which of course cannot be debugged).
max_input_vars cannot be the issue as it is set to 1000.
It turned out to be that suhosin was active on the staging Server that caused the problem as it chopped off long variable names.

To verify the issue, I created a small php page that prints the $_POST variable (print_r($_POST); die;). Then logged the POST command in Chrome, (network tab, click on preserve log), right click the post command and choose "copy as cURL". Change the URL in the cURL-statement to use the print-php page and verify that the arguments returned are the same that are submitted.

If they are not, your problem is with the webserver.

Thank you for filing this issue.

We experienced the same issue here. But only on the staging server (which of course cannot be debugged).
max_input_vars cannot be the issue as it is set to 1000.
It turned out to be that suhosin was active on the Live Server that caused the problem as it chopped off long variable names.

I hope you haven't yet tried to submit the user permissions form. Suhosin indeed causes often issues in Drupal :(

For comments like #2630776-6: Suhosin causes menu items to be disabled we have another issue already: #2464077: Menu link overrides are lost after cache rebuild.

We actually had a whole bunch of weird errors reported from the client because of this problem.

To give a future reference to others that have the same problem here a quick recap of which settings changed we changed.

suhosin.request.max_array_index_length
suhosin.post.max_array_index_length
This is for the names. When the names the UUID takes up a major part of the 64 characters that are allowed by default so it was increased to at least 128

suhosin.request.max_varname_length
suhosin.post.max_varname_length
Just to be save, we increased the value from the default 64 to 128

@dawehner:
This was unfortunately a case of "it runs on my machine" and the client ran into it. We're much too happy with config-import/export to make our fingers dirty on the non-dev servers ;-).

I don't think there's anything that can be done here, additionally suhosin doesn't exist in quite the same way in PHP 8 as far as I know. Closing as outdated.