Tables and Spoiler Tags

Any chance something can be done about this. It worked on our old version of VB from when we moved 2010 so I'd hope there'd be a way to get it to work on this new version.
The problem - here's a table.
I copy and paste it from Excel (actually from Open Office Spreadsheets but don't think that's make a difference).
I then use the Tables DropDown from the menus to give it a border.
It's perfect.

pokerhand (3)	€400.00	46.5
limpwhacker (3)	€60.00	44.5
luckforsome (2)	€60.00	44.5
Flushdraw (3)		40
Strewelpeter (1)		39.5
RichieM (2)		39
ArmaniJeans (3)		37.4
Lao Lao (2)		36
mcnugget		35.5
shrapnel (3)		33
mdoug (3)		31.5
6starpool		31
premierstone (2)		27.5

However if I put spoiler tags around it, it gets completely garbaged like this.
I've done exactly the same steps as above, except for spoiler tags (selected from the menu) around it.

SPOILER

So any quick fix for this - I really don't see why putting spoiler tags around something should cause the contents to be different. It's actually bizarre that this would happen.
Caused a problem in the MultiSport game - I like to post tables so there is transparency on where peoples points come from. But because I could no longer put them in spoiler tags, it meant some people couldn't open the thread when there was lots of tables on one page.

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