SafariDriver return boolean value of non-defined-value attribute

Hi experts,

As I know Safari has followed W3C standard. But when I use safaridriver (version 12.x) to get the real value of an attribute which has no value, it returns "true".

For example, there is an element like this:

<img title border='1' src'...'/>

the safaridriver returns the 'title' attribute's value as 'true'. I think it should be empty string.


So, is it a known-issue of SafariDriver or not? Or which version of the driver supports new behavior like above?


Thank you.