Hi,
This is what I tried:
(1) game uninstalled, everything deleted
(2) reinstalled game, played, default holes and bounce marks are visible
(3) downloaded and installed v.9.13.11 of the modpack with "recommended XVM only setting" (selected Remove the contents of th DLC cache" and "Reset game settings ..."), nothing added, nothing taken out => holes and bounce marks are invisible
First thought - XVM is to blame.
(4) uninstalled modpack (made sure there's nothing left of it in res_mods other than the 0.9.13 folder) and the default holes and bounce marks were again visible
(5) downloaded and installed XVM (I didn't mess with the any configuration files) => no holes and bounce marks are visible
Conclusion - XVM is to blame, so indeed, there's nothing you can do :( => posting the problem to XVM support forum (probably useless).