Numpad +/- will zoom in blueprints when typing in a node on Linux

When entering text into a node such as Print String, pressing +/- on the numpad will zoom the blueprint in and out.

This does not occur on Windows or Mac.

1. Open UE4 Editor
2. Add blueprint based on actor
3. Add Print String node to Event Graph
4. Highlight "hello" text and use numpad +/-

Result:
Blueprint view zooms in and out as characters are entered

Expected:
Input does not zoom when entering text in a node.