Playing France, I have unlocked overseas bases, yet my ships are not being repaired in shipyard/naval base harbors. I have had a fleet sitting for 6 months of game time and 0 repair has been done to the three ships in the squadron. Port is L'Orient - which has a shipyard and naval base, and it is the only ship/fleet element in the port.
Some other issues I have noticed: sailing a fleet from Saint Malo to L'Orient, no contact with the enemy and all of the ships in the squadrons have taken 50% of their hull value in hits from weather. That seems a bit excessive.
Also, France has the option to unlock Irregular Cavalry Tactics, and opt_title_AssaultColumnFM; these are national modifiers and RGDs for which they already have access. Seems redundant.
Playing Steam, official patch 1.02 that was pushed to Steam. I've not tried the new beta (yet), but I am hopeful that the attrition changes will fix part of that damage issue.