When performing a search in a TextBase using the MultiTrans Client, the search results take considerably longer to load than normal and each result is repeated multiple times:

Note that in the example above, the Segment number, Word number and File number are all the same.

Click Unselect all before clicking Select all again. This will ensure that each TextBase is selected only once:

If any TextBases are already selected when you click Select all, those TextBases will be selected again. This causes the same TextBase to be opened multiple times in the same session.
This is a known bug.