Line segments in a facet_wrap disappear when maximizing the viewer using ggplotly()

Hi,
I am trying to make a line chart with facets with free_y scale.
When I see the plot in the viewer everything looks fine:

But when I Zoom the Viewer and maximize the window some segments from the lines disappear.

The tooltip however is visible when I roll with the cursor over the missing line.
I have the same issue when I look it into Rmarkdown with fig.height=8, fig.width=11

ploty version - 4.7.1.9000

g5 <-   ggplot(mobile_hor_top14, aes(x=month_p, y= freq, group=1,
               text = paste('CPED: ', Month.Code..Main.CPED.Date.,
                  '<br>Count:', freq))) + 
 geom_line(alpha=0.8, colour="blue", size = 1)+
  scale_x_continuous(breaks = seq(from=min(mobile_hor_top14$month_p), to=max(mobile_hor_top14$month_p), by=2), labels = gsub(" ", "",unique(mobile_hor_top14$Month.Code..Main.CPED.Date.))[seq(1,
diff(range(mobile_hor_top14$month_p))+1, 2)]) +
  xlab("")+
  ylab("") +
  facet_wrap(~prod_name_add, ncol=2, scales="free_y") +
  theme(legend.position="none") + 
     theme(axis.text.x = element_text(angle = 25, hjust = 1),
           strip.text = element_text(size = 8, margin = margin(.1, 0, 0.1, 0, "cm")),
           strip.placement = "outside")

ggplotly(g5, tooltip="text") 

指定された寸法で、facet_wrap(scales="free_y")を使用した提供済みのggplotly()の例をViewerとR Markdownで再現し、通常表示と最大化表示を比較します。ソースファイルやテストは指定されていません。両方のレイアウトで線分が表示されたままになり、ツールチップが引き続き機能すれば完了です。