When accessing a translated page which exists in the target wiki (example), an indicator is shown to provide access to the local version.
Currently the link is broken since it points to:
https://simple.m.wikipedia.org/wiki///id.wikipedia.org/wiki/Bulan
For the example, it would be expected to point to https://id.wikipedia.org/wiki/Bulan instead. The screenshot below shows the the tooltip and the URL bar (at the bottom) when hovering the link (the cursor is not visible in the screenshot):
