View "edited" message causes crashes

[shuvashish76]

Describe the bug Viewing "edited" message immediately after saving it causes crashes. This happens time to time not regularly.

To Reproduce Steps to reproduce the behavior:

1. Send a message (on any group)
2. Edit & modify it
3. Click Save
4. Now quickly click on "edited" to view edit histories. App crashes. But after a while I checked same message history it worked as expected.

Expected behavior It should show the edit history without any crash.

Smartphone (please complete the following information):

• Device: Lenovo Tab4 8 Plus (TB-8704X)
• OS: Android 9

Additional context

• App version: 1.6.10.sc75 [40101252] (F-d7e7a319)
• Store: F-Droid
• Homeserver: matrix.org
• Related labs settings: [Have you enabled any settings in labs (which ones), and does the issue still exist when disabling these?] - Mark chats as unread, Enable swipe to reply in timeline, Enable threaded messages, Enable defferred DMs, Enable rich text editor.
• Logs have been submitted using the app's built-in bug report (/"rageshake") mechanism: No

Upstream relevance

• Does this issue exist in Element Android? - Not sure
• If this issue exists in Element Android, please also link the corresponding bug report (create a new one if it doesn't exist yet) - Not sure

Logs:

FATAL EXCEPTION: main
Process: de.spiritcroc.riotx, PID: 4789
java.lang.IndexOutOfBoundsException: getChars (-1 ... -1) starts before 0
    at android.text.SpannableStringBuilder.checkRange(SpannableStringBuilder.java:1326)
    at android.text.SpannableStringBuilder.getChars(SpannableStringBuilder.java:1202)
    at android.text.TextUtils.getChars(TextUtils.java:109)
    at android.text.SpannableStringBuilder.<init>(SpannableStringBuilder.java:67)
    at android.text.SpannableStringBuilder.subSequence(SpannableStringBuilder.java:1194)
    at me.saket.bettermovementmethod.BetterLinkMovementMethod$ClickableSpanWithText.ofSpan(BetterLinkMovementMethod.java:27)
    at me.saket.bettermovementmethod.BetterLinkMovementMethod.dispatchUrlLongClick(BetterLinkMovementMethod.java:1)
    at im.vector.app.core.utils.EvenBetterLinkMovementMethod.dispatchUrlLongClick(EvenBetterLinkMovementMethod.kt:1)
    at me.saket.bettermovementmethod.BetterLinkMovementMethod$1.onTimerReached(BetterLinkMovementMethod.java:26)
    at me.saket.bettermovementmethod.BetterLinkMovementMethod$LongPressTimer.run(BetterLinkMovementMethod.java:3)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6718)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)