Unhappy with Vis uses in AM5

Ya, I was under the opinion that the two uses were limiting with each other, that is you could use twice your Magic Theory in vis per season or in the lab, and both were limited by your Arts, also. Therefore if you had a 5 Magic Theory and used 3 vis boosting a spell during the adventure in the beginning of the season would only be able to use 7 more in the lab in the last of the season.

Your statement is correct. But note, that in the paragraph you quoted and answered there is no reference to 'seasonal'.
To not mislead you, it might have been better worded, e. g.:
I do not find a rule about applying any Art limit of Vis use also in the lab, with the only exception of the limit of Vis to be used to prepare talismans, where it replaces the 2xMT limit of Vis integration into single projects.

Kind regards,

Berengar