On itwiki's village pump it's been pointed out that, using mobile version, section wikilinks not always work. Specifically, they only work if pointing to an H2 section, otherwise they just send to the top of the page like a normal link would. Moreover, this isn't true for redirects: clicking on a redirect that sends to a section will always work as expected. Also note that this problem isn't easy to reproduce, at least from PC using mobile format: I tried several times and it didn't pop up, while it did when actually using a cellphone.