External subtitle has a problem with .SUB extension (new WD TV)

Line brake is not recognized as it should, in subtitle with .SUB extension.

This is occasion only with external subtitle of this type. 

Instead of two row-

Example:

“in only seven years, America has risen
to the challenge of what he called…”

It should be: 

“in only seven years, America has risen
to the challenge of what he called…”

But is not. The subtitle line appears as single line with vertical bar between them.

This is a result:

“in only seven years, America has risen | to the challenge of what he called…”

This is a case only with external subtitle with SUB extension. Subtitle inside video file (embedded subtitle) working well.

As you can see in the stickies, this bug has been around for ages and thus won’t be fixed.