This is an issue seen with the Text Template node and prevents the first variable from being used correctly.
Steps to repro:
Create a Text Template node.
Paste or type text into the text editor that has a variable in it. (i.e. You are {{age}}.
Watch the node as it creates the input socket.
Click into the text field that was created.
Watch as the text field is populated by the Text Editor entry.
Make changes in the text field on the node.
Watch as changes are reflected in Text Editor.
Expected behavior: User created variables are not used to store Text Template text.
This is an issue seen with the Text Template node and prevents the first variable from being used correctly.
Steps to repro: Create a Text Template node. Paste or type text into the text editor that has a variable in it. (i.e. You are {{age}}. Watch the node as it creates the input socket. Click into the text field that was created. Watch as the text field is populated by the Text Editor entry. Make changes in the text field on the node. Watch as changes are reflected in Text Editor.
Expected behavior: User created variables are not used to store Text Template text.