Modify the tab settings in the ToC style definitions: one approach is …

1. press ctrl + shift + s [all together] to open the Apply styles dialog
2. put the cursor at the end of the first entry in the table of contents – the Apply style dialog (probaby shows) Hyperlink
3. press the left arrow to move the cursor back – with any luck, the Apply style dialog now shows ToC 1
4. click [Modify] in the Apply style dialog
5. select Tabs in the Modify style dialog
6. in the Leader group, select the radio button for None
7. click [Set], then click [OK] – now you've updated the first ToC style
8. click [OK] again to close the Modify style dialog

Repeat from step 2 for each style in the ToC. (step 3 will show the name of each style)

Question for the forum: I tried editing ToC Base first, but this didn't seem to change anything.