update docs with a warning about the issue 55

Author: darwin

docs/faq.md

@@ -81,6 +81,17 @@ That is why this feature is currently experimental and does not make a lot of se
 
 ### Why some custom formatters were not rendered?
 
+BREAKING:
+
+> Are you using Chrome 84 or later?
+
+Enabling custom formatters in the devtools settings is not longer sticky. 
+Custom formatters are likely to be removed later this year.
+
+Please [follow the issue here](https://github.com/binaryage/cljs-devtools/issues/55)  
+
+---
+
 First, custom formatters must be enabled in DevTools Settings:
 
 `> DevTools menu > Settings (F1) > Console > Enable custom formatters`

docs/installation.md

@@ -4,6 +4,10 @@
 
 Available in [**Chrome 47 and higher**](http://googlechromereleases.blogspot.cz/2015/12/stable-channel-update.html).
 
+**WARNING**: Custom formatters will be probably removed from Chrome 86 (or later). 
+Please read recent news in [issue 55](https://github.com/binaryage/cljs-devtools/issues/55).
+Newly since Chrome 84 you have to re-enable custom formatters every time you open devtools. The setting is not sticky anymore. 
+
   * Open DevTools
   * Go to Settings ("three dots" icon in the upper right corner of `DevTools > Menu > Settings F1 > Preferences > Console`)
   * Check-in "Enable custom formatters"