Using CKEditor as a back end editor on my website. It is driving me round the bend though as it seems to want to change the code to how it sees fit whenever I press the source button.
Follow this given step to resolve this issue.
Go to "Admin >> Configuration >> CKEditor"; under Profiles, choose your profile (e.g. Full).
The easiest solution is going to the config.js and setting:
config.allowedContent = true;
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