Cannot split block after prepending to word

[mchowning]

Describe the bug

On Android only, adding a character in front of a word in a paragraph block and then pressing enter results in a new line instead of splitting the block.

To Reproduce

1. Add multiple words to a paragraph block
2. Place the cursor directly in front of one of the words and type one or more characters
3. Press Enter (your cursor should be in the middle of a "single" word composing the word that you placed the cursor in front of and the word you just typed)
4. Observe that the paragraph block was not split and instead a new line was entered

Expected behavior

Pressing Enter within a paragraph block should always split the block.

Smartphone

• Device: Pixel 1
• OS: Android X
• Version: 1.30 release testing (c2a85e0)

[guarani]

Can reproduce on WPAndroid 15.2.1 using the Gboard keyboard. The bug isn't present when using the Samsung keyboard.

[AmandaRiu]

This appears to be fixed as of 1.57.0. Tested on a physical Pixel 4 running android 11 with Gboard:

screencapture-1626115820240.mp4

closing 👍