`gg` and `G` cannot be reversed in Scroll Mode

[mental2008]

Since I installed Scroll Reverser on macOS to reverse the mouse wheel, I also enabled the reverse scroll option in the Vimac configuration (as shown below). In practice, I found that h, j, k, l, d, u revert to their normal semantics. But gg and G are not reversed successfully. Although I could accomplish this by overriding the scroll keys (gg instead of G, G instead of gg), it seems not an elegant way. I'm wondering if vimac doesn't take into account the reversion of gg and G.