Chat or IM input label is not persistent
Labels MUST be visible
Filling out forms correctly can be one of the more time consuming and frustrating online user experiences, and it can be even more challenging for people with disabilities. The single easiest way to prevent user errors is by providing clear labels and instructions that are available to everyone at all times. Labels and instructions should: 1) be clear and informative, 2) disclose any constraints such as required data formats or ranges, and 3) identify required fields. Well-designed labels and instructions provide enough information so people can fill out forms without undue confusion or errors.
Fix this issue by ensuring that the message input field has a visible label and it is always visible. Options include: a persistently visible text label or send button or send icon next to the input field.