you are correct about the share price not being able to hold any gains. The pattern of sales suggests it is being capped (skilfully, but easy enough to do on such low volumes).
Odds are someone wants to 1) suppress the price of any possible capital raising, should that occur or 2) keep the price down for a takeover.
So that's puzzling and a negative but ultimately it is indicative of the companies worth that someone would bother. Upside is that it provides the opportunity to buy on dips.
My opinion only, DYOR.
CXX Price at posting:
24.5¢ Sentiment: Buy Disclosure: Held