fix: twice click to maximize panel

src/state/userInterface/effects.ts

@@ -8,6 +8,7 @@ import { generalActionError } from "../actions";
 import { userInterface } from "..";
 import { selectors } from "../atlasSelection"
 import * as actions from "./actions"
+import { isNullish } from "src/util/fn";
 
 @Injectable()
 export class Effects{
@@ -70,18 +71,23 @@ export class Effects{
       )
     ),
     switchMap(([ { targetIndex }, panelMode ]) => {
-      const newMode: userInterface.PanelMode = panelMode === "FOUR_PANEL"
+      let newMode: userInterface.PanelMode
+      if (isNullish(panelMode)) {
+        newMode = "PIP_PANEL"
+      } else {
+        newMode = panelMode === "FOUR_PANEL"
         ? "PIP_PANEL"
         : "FOUR_PANEL"
+      }
       const newOrder = newMode === "FOUR_PANEL"
         ? "0123"
         : "0123".split("").map(v => ((Number(v) + targetIndex) % 4).toString()).join("")
       return of(
-        userInterface.actions.setPanelMode({
-          panelMode: newMode
-        }),
         userInterface.actions.setPanelOrder({
           order: newOrder
+        }),
+        userInterface.actions.setPanelMode({
+          panelMode: newMode
         })
       )
     })

src/viewerModule/nehuba/viewerCtrl/perspectiveViewSlider/perspectiveViewSlider.component.ts

@@ -124,6 +124,7 @@ export class PerspectiveViewSlider {
       ),
     ]).pipe(
       map(([ mode, order ]) => {
+        // TODO order can potentially be nullish
         if (!([EnumPanelMode.PIP_PANEL, EnumPanelMode.SINGLE_PANEL].includes(mode as EnumPanelMode))) {
           return null
         }