I have a matrix field which is used a my main Body content field. The site has just been updated to the latest version of Craft and I tried to add a block to the matrix field but when i try to save it I get the error on a plain text field:
Field Limit is too big for your chosen Column Type.
Even if i open the field and don't make any changes and jut save it I get the same error. The matrix field has 11 Block Types.
I have the same field in another website which actually has another couple of blocks in it and it can save without any issues.
I have found this thread: https://github.com/craftcms/cms/issues/2009 and possibly related to a MySQL issue.
But is the issue related to the size of the Matrix Field? Or overall the number of fields in the database?