Extra barline

[michaelcchu]

When displaying this sheet music in osmd, I sometimes get an extra barline in measure 9 of the first prelude:

Is the extra barline supposed to be there? It seems a somewhat unusual to me, though I am not very knowledgeable about the conventions for music notation.

When I resize the page or zoom out, the extra barline goes away:

[michaelcchu]

This extra barline occurs when a part with two staves contains a right and left repeat sign. Here is a simple test file: test-double-repeat.zip.

[michaelcchu]

This issue has also been noticed by mzaidi-bw (see #901).

[michaelcchu]

Interestingly, the extra, long barline on the left also occurs if there is just a simple left repeat sign. Here is an example: test-repeat.zip.

[sschmidTU]

To state it in this issue as well, this extra barline shouldn't be there, it's just a mistake in OSMD, as mentioned in #901 (comment).

It's however rather a curiosity and lower priority than other issues that cause misreading of the score.