Just guessing, as I haven't experienced this;
Check the language of both users. If they aren't the same, change and see if '%' disappears. If it does, my guess is that IBM has forgotten to translate to the language in question (islandsk?). If I'm correct, create a case with support, so they can fix it for next release/patch.
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Sandeep Dhirad
Elkjøp Nordic
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