Assign plugin feedback not expanding in Safari

Using the assign activity, whenever the teacher leaves enough feedback to a submission, the section will be contracted, but the link on the expand '+' button does not work on Safari upon page loading.

However, if we execute on the console:

$('.expandsummaryicon')[0].click();

The contract '-' and the expand '+' links start working normally.

This behavior is found Safari for IOS as well as MacOS. On the other browsers it works as intended. 

Tried fixes:

On the file: mod/assign/renderer.php 

There were 2 lines with this exact same call:

$this->page->requires->js_init_call('M.mod_assign.init_plugin_summary', $jsparams);

Those were changed to this: 

$this->page->requires->js_init_call('M.mod_assign.init_plugin_summary', $jsparams, true);

Adding the 3rd parameter which sets the ondomready value to true. but the behavior did not change and the Safari error remains.

Please help!

Best regards

Felice

PS: To contract the feedback via JS console on the navigator, you can execute:

$('.expandsummaryicon')[1].click();