I have some problems that I hope you can provide advice. I newly installed Magento 18.104.22.168 and noticed strange behavior when i save something.
From the Navigation bar, I enter the the default 'about us' CMS page,and when I try to change the contents by copy and paste html data from my original site via the wysiwyg editor , and then click 'save and continue', I get at 403 error and the changes cannot be saved.
I tried to create product data and when I try to make changes to specifically the description of product data by copy and pasting it with html tags and then click 'save and continue', The changes cannot be saved and there is not even any error message displayed.
There are no third party module being installed.
Please advise on how I can resolve the problem. Thank you very much.