Japanes Kanji "予" would be cause of exception in if expression

[SoshiHomma]

Description

The kanji that commonly used "予" would be cause of exception like:

• When: Use "予" as a condition: Input Error: Non-special character was escaped (Something like "予定日時" means "Scheduled date")
• When: Use just only one letter "予" in if expression: Input Error: Misplaced THEN keyword or missing logical operator: if [予] = "Hoge" then [Foo] = "Bar"

Test code:

予:Hoge
Foo:Bar

if [予] = "Hoge" then [Foo] = "Bar"

Saved text file with ANSI encode, by Windows 10's default notepad

Expected Result

No errors and will get output of test cases.

Actual Result

Got error above.