[Frenzie]

Probably see https://github.com/koreader/koreader...ent-1336123364 in which case it's not supported very well, some of them might be fixable.

For example, for the frontlight widget, maybe this would do the trick.

diff --git a/frontend/ui/widget/frontlightwidget.lua b/frontend/ui/widget/frontlightwidget.lua
index 80e605192..807455acb 100644
--- a/frontend/ui/widget/frontlightwidget.lua
+++ b/frontend/ui/widget/frontlightwidget.lua
@@ -82,7 +82,8 @@ function FrontLightWidget:init()
 
     -- Input
     if Device:hasKeys() then
-        self.key_events.Close = { { Device.input.group.Back } }
+        local close_keys = Device:hasFewKeys() and { "Back", "Left" } or "Back"
+        self.key_events.Close = { { close_keys }, doc = "close frontlight widget" }
     end
     if Device:isTouchDevice() then
         self.ges_events = {