Customized and Expandable TextView VS richeditor-android

Step 1. Download the .aar module and import it as a module. Place it in the app folder. https://github.com/Rajagopalr3/CustomizedTextView/raw/rajgopalr3/customtextview-2.1.aar

In short there are two different types of keyboards. One type, like GBoard sends entire words once you select an autocorrect recommendation from the list... it sends the whole word, all its characters, all at the same time [acts almost like pasting], whereas other keyboards send letter-by-letter. If you think about how autocorrect on phones work nowadays, if you type the word wrong, but then tap on the correct word on your keyboard, keyboards now have the ability to delete and replace entire words (and not just characters). So because of this, some android keyboards don't actually send the absolute cursor / text-selection position anymore. Instead they send it relative to the last words you've selected. You can see other note taking apps and editors plagued by keyboard issues due to this exact phenomenon on Android here as well, mainly relating to newline characters. (while the newline is added, cursor isn't updated etc) : Microsoft OneNote, Workflowy, CKEditor, Quill, RichEditor for Android, etc... Since you mentioned that your issue happened -after- you selected / copy / pasted some text, I cannot eliminate the possibility that an android os flavor (or its selection handling, since it's different for each android version and os vendor) / keyboard / browser might also be the cause. I.e. in Android Firefox, there is a bug and you cannot select words inside rich text editors by double tapping on them like you can in any other browser. This bug has been around for -6 years- now. Affecting even Github on Firefox Android. We also chimed in and tried to keep it moving, and despite our best attempts, after 2 years, Mozilla just closed the issue without even fixing the bug. You can see relevant links here. So unfortunately, browsers and keyboards on Android can cause really strange issues, and we cannot anticipate all the weird and unexpected ways they might break. 3 ) Since you also mentioned copy/pasting stuff, often people experiences issues like this when they use things like clipboard syncing tools on Android (i.e. pushbullet, or on iOS iCloud's clipboard sync etc) Because you never know what was leftover in the clipboard at the time you copy pasted, and sometimes if the sync is delayed, these things may misbehave, and paste twice, or with a delay, or paste a blank return key unexpectedly etc. 4 ) This is the silliest but still likely scenario that I still have to mention. Sometimes, depending on the OS/Browser combo, when users copy paste text from Cryptee while it's in dark mode, paste it into another part of the document, then open the document in light mode, it causes text to have white color, and makes it look invisible, causing panic.