add known issue for ambiguility with venues containing prefix

docs/UserGuide.md

@@ -481,8 +481,9 @@ Furthermore, certain edits can cause the StaffConnect to behave in unexpected wa
 ## Known issues
 
 1. **When using multiple screens**, if you move the application to a secondary screen, and later switch to using only the primary screen, the GUI will open off-screen. The remedy is to delete the `preferences.json` file created by the application before running the application again.
-2. **When adding phone number descriptors**, If you try to add a number with a descriptor such as `98731094 (home)`, the application rejects this input and advise the user to only provide phone numbers with numerical values only. The phone number is not intended to store phone number descriptor but users can consider using tags such as t/homePhone as a workaround.
-3. **When adding name containing special characters**, If you try to add a name such as `Jason s/o William`, the application rejects this input and advise the user to only provide name with alphanumeric values only. The name is not intended to store special characters but users can consider using `so` or `son of` as a workaround.
+2. **When adding/editing phone number with a descriptor**, If you try to add a number with a descriptor such as `98731094 (home)`, the application rejects this input and advise the user to only provide phone numbers with numerical values only. The phone number is not intended to store phone number descriptor but users can consider using tags such as t/homePhone as a workaround.
+3. **When adding/editing name containing special characters**, If you try to add a name such as `Jason s/o William`, the application rejects this input and advise the user to only provide name with alphanumeric values only. The name is not intended to store special characters but users can consider using `so` or `son of` as a workaround.
+4. **When adding/editing venues containing space with an attribute prefix**, If you try to add a venue such as `Room 12 t/r`, the application will add a contact with a venue `Room 12` and a tag `r` instead of the intended venue `Room 12 t/r`. The venue is not intended to store venues that contains a space followed by an attribute prefix but users can consider omitting the space or replace with a hyphen such as `Room 12t/r` or `Room 12-t/r` as a workaround.
 
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