I am toggling the preview pane (not side-by-side) and selecting all my documents to view, however, after sometimes, the selected document can no longer display my content. Quitting the app is implausible except a force quit.
Thanks for reporting, @Bundit_Jianpinitnan !
Yeah, I am experiencing this as well.
Do you get any errors when it happens in the dev console?
I’ll find how to reproduce it.
Here you are 
browser-main.js:2 Uncaught (in promise) TypeError: Cannot read properties of null (reading 'querySelectorAll')
at hl (browser-main.js:2:1041132)
at Jd (browser-main.js:2:1191355)
at core:open-note (browser-main.js:2:1202894)
at Nd.dispatch (browser-main.js:2:1150225)
at Js (browser-main.js:2:1013055)
at HTMLBodyElement.<anonymous> (browser-main.js:2:1014199)
hl @ browser-main.js:2
Jd @ browser-main.js:2
core:open-note @ browser-main.js:2
dispatch @ browser-main.js:2
Js @ browser-main.js:2
(anonymous) @ browser-main.js:2
await in (anonymous)
dispatch @ browser-main.js:2
(anonymous) @ browser-main.js:2
(anonymous) @ browser-main.js:2
core:sidebar-select-item @ browser-main.js:2
o.__trace__ @ browser-main.js:2
dispatch @ browser-main.js:2
selectNextItem @ browser-main.js:2
o.__trace__ @ browser-main.js:2
dispatchCommandEvent @ browser-main.js:2
handleKeyboardEvent @ browser-main.js:2
handleDocumentKeyEvent @ browser-main.js:2
Gotcha! Thankssss