Hover text do not show up if values does not exist in BOTH facet category

Hover text exists in blue block

Hover text does not exist in either green or torquise block

Can't share the source data but what's happening is something like below:
Facility,ProductSubFamily,Measure,Qty
A,x,Commit,0.2
A,y,Request,0.9
A,d,Commit,0.8
A,d,Request,0.5
A,e,Commit,0.7
A,e,Request,0.3
...

        ggplot(data = dat,aes(x=Measure ,y=Quantity,fill = ProductSubFamily)) +
        geom_bar(stat = 'identity')+
        facet_grid(.~Facility,  space = "free", labeller = label_value,switch = 'both')+
        theme_bw()+
        theme(
          panel.grid.major.x = element_blank(),
          panel.border = element_blank(),
          legend.position='bottom',
          legend.title=element_blank(),
          axis.text.x=element_text(angle=30, hjust=1)
        )+
        scale_y_continuous(labels = percent)

首先使用等效的 facet 資料重現所提供的 ggplot 範例，重點關注在某個 facet 類別中缺少值的綠色和青綠色區塊。追蹤互動式圖表如何為分面長條圖產生 hover 文字。當這些區塊的 hover 文字能像藍色區塊一樣一致地顯示時，即表示完成。