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Up until a few days ago, I could vote up comments via my iPad2. Now this is no longer possible, nothing happens when I tap to vote up.

This functionality was previously available, see Can't flag or up vote comments on iPad?

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Confirmed, at least on an iPad 2 just updated to ios 5. No amount of clicking anywhere on or near comments brings up the voting flags/widgets. – Clare Macrae Oct 16 '11 at 22:16
Actually, I've found one situation where I can get the flags to appear: where a comment contains a link, the first click on the link makes the comment-voting options appear. See the first comment on this question, for example. – Clare Macrae Oct 17 '11 at 7:26
@Clare: thanks for updates. I discovered it on ios 4.3. – Wikis Oct 17 '11 at 7:42
up vote 6 down vote accepted

We recently switched from applying different CSS classes in mouseover and mouseout events to just using :hover CSS styles. The former technique goes back to the days when we where still supporting older IEs, which didn't handle :hover correctly or at all. Fortunately, that's now in the past.

Mobile Safari is a bit picky about applying :hover styles -- apparently it only does that when it's also handling some other click or similar event. In the next build, the comments have a dummy click event handler attached; it well then work as it did before.

This is also why Clare's workaround works, because interacting with the link is also enough to force the :hover styles.

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Could this same technique be used to get spoiler markup working in Mobile Safari? – user149432 Oct 19 '11 at 11:07
@MarkTrapp: Excellent idea; that works indeed. – balpha Oct 19 '11 at 11:22
I see that this has now been rolled out now. Thanks. – Clare Macrae Oct 20 '11 at 5:48

Stringing together the comments above, I've noticed a repeatable workaround for this. The trick is to click on the hyperlinked name of the commenter.

This then brings up the little widgets for flagging and up voting comments.

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