Painting a Mathematical Diagram does not offer Painting Skill

[alexanico00]

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? 1.106.148.1030
What expansions, game packs, and stuff packs do you have installed? Romantic Garden Stuff, My First Pet Stuff, Holiday Celebration Stuff, Blooming Rooms Kit, Backyard Stuff
Steps: How can we find the bug ourselves? Get a Sim in a Focused mood and have the Sim paint a Mathematical Diagram on an Easel. Inspect the Painting and Logic skills in the Skills menu. Notice that the Sim only gains Logic skill and does not gain Painting skill.
What happens when the bug occurs? Sims do not gain Painting skill when the Sim paints a Mathematical Diagram on an Easel while Focused. The Sim only gains Logic skill and does not gain any Painting skill.
What do you expect to see? Sims should gain both the Painting and Logic skills when painting a Mathematical Diagram while Focused.
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

‌

I have tested all of the Emotional Paintings and the Focused Painting (Mathematical Diagram) is the only one affected. I think this is because the Focused Painting is the only Emotional Painting that offers an additional skill besides the Painting skill, which is the Logic skill, and therefore the game ignores the Painting skill and the Sim only gains the Logic skill.