Werid Spoiler Crossing out

Ive notice that when you put a

Spoiler:

it crosses it out. Anybody know why. Its happends on this forum

I don't quite understand, what do you exactly mean?

You dont see the Spoiler Crossed out?

This is how it looks after clicking on spoiler.

This is what I see

Yes I do.

I don't really know, why its happening just for you.

But last time around all the text in a thread was just crossing out, since someone had left the crossing thing on one of the posts. The following posts, were all crossed. Kinda a bug. Do you think something of that sort has happened.
But you have started a new thread, why does it happen then.
Try logging out of the forum & relogin & check.

It might but its just not this forum its all my forum and it happens to my other computer too.

I see it as crossed out as well, although this is the only thread I've noticed it in.

EDIT: Just checked my forum and it is doing it there as well though it wasn't yesterday. Must be a glitch I think

Just Started today. Very Werid.

Seems to be back to normal for me now

it sometimes happen and sometimes dont
well i also dont know much about that...