Strata committees are very much left to run their meetings and votes as they see fit, but there a plenty of ways to force them to change if they’re not doing the right thing.
The most obvious option is to present a motion to the committee itself, saying that all votes, including who voted for what, should be notified to the committee members.
If that fails, you put the same motion on the agenda of your next AGM. If the secretary and or chair baulks at that, there are mechanisms available for removing them from the committee either by a majority vote of owners or via the Tribunal.
Meanwhile, you might consider putting a motion to your next AGM that the committee reveals the number of outstanding issues with water leaks and declare what they plan to do about them.
You won’t make yourself very popular but it sounds like that ship may already have sailed.