Hi I am using Texstudio with standalone LT server on Ubuntu.
I have been trying to remove the duplicate dictionary check from LT. Texstudio by default uses Hunspell and I have been adding new words before I installed LT.
I include the --config option to the HTTPServer with the following property file content.
disabledRules is not an option in the properties file. It needs to be set as parameter by the software that calls LT via HTTP. I’m not sure if there’s a solution for your issue other than TeXstudio adding this feature. You could try to assign just en as a language - if LT gets en (instead of e.g. en-US), it won’t run the spell check.