bug(developer): A new "Add word" row is created by pressing the spacebar.

[dinakaranr]

Describe the bug

The "Add word" row is created when pressing the spacebar key.

Reproduce the bug

Steps to reproduce:

1. I installed the keymandeveloper-18.0.138-alpha build in Windows 10.
2. Created a new "Lexical Model" project.
3. Navigate to the "Models" tab and click the "*.model.ts" link button.
4. Navigate to the *.tsv file tab.
5. Click in the "Add word..." box.
6. Press the "Spacebar" key. Actual Results: Here, the "Add word..." row was added. Please take a look at the screenshot (AddWord_SpaceBar.png).

Expected behavior

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Related issues

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Keyman apps

• [ ] Keyman for Android
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• [ ] Other - give details at bottom of form

Keyman version

keymandeveloper-18.0.138-alpha

Operating system

Windows 10 OS

Device

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Target application

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Browser

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Keyboard name

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Keyboard version

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Language name

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Additional context

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