Inline Editing Multiline Text field only works for most recent items now

I'm also experiencing the same problem!

 I have a "Multi line of text" field that has inline editing enabled on in a Modern List in order to give the users the ability to update the object by clicking in it and add new notes without opening it. The 17 of March we discovered that there is a limit in characters to add when editning the objects. The limit allows only 255 characters without opening the object.

Tried: 

• clearing cache
• switching to Chrome

I don't want to enable Rich text as a help article suggested, as I want text only and for the minimal amount of clicks for the user. 

Same issues and impacting everyone in our team the same way so it seems to be a SP issue, not isolated to any user.