When creating a new post and post title appears as uppercase during edit and when published, the unintended results is your post title is out of whack with a mix of upper and lowercase. It can be the most annoying thing ever.
Most of the time the problem is from the stylesheet of either the theme or from a plugin. It can start happening after a new theme is applied or new plugin installed and also from an update from any of the two.
And, How To Fix It?
You would need to inspect the post title element using the Chrome or Safari browser developer tools.
- Right click on the Post Title and choose Inspect Element
Next, on the developer tools, the particular textarea should still be highlighted. Look into the CSS property. From the CSS inspector the selected element has CSS applied that would include changing the text to uppercase.
If I hover the xxxx.css link I would be able to tell from which directory it is being served from, we can then tell if it’s a theme or a plugin stylesheet.
In this example it is from a theme, so editing the stylesheet and removing the text-transform should fix it.