Fix the bug that the input text disappear after focus.
Fix the bug that the input text disappear after focus.

rsadam-google/google-input-tools,google/google-input-tools,google/google-input-tools,google/google-input-tools,google/google-input-tools,googlei18n/google-input-tools,google/google-input-tools,googlei18n/google-input-tools,googlei18n/google-input-tools,runt18/google-input-tools,rsadam-google/google-input-tools,runt18/google-input-tools,googlei18n/google-input-tools,runt18/google-input-tools,googlei18n/google-input-tools,rsadam-google/google-input-tools,rsadam-google/google-input-tools,runt18/google-input-tools,rsadam-google/google-input-tools,runt18/google-input-tools,runt18/google-input-tools,google/google-input-tools,googlei18n/google-input-tools,rsadam-google/google-input-tools