I am about a year growing into
C walkeriana and I have various plants at different stages of growth. After reading the famous catwalker post on here (Harry of H&R nursuries) and talking to Harry in person I think your plant is growing weird because it's not getting enough water. These plants need lots of air to the roots, but they also need lots of water. Based on hearing that coerulea forms were easier, I bought an established division. About 1 month in I got root rot in my conditions... with a bark mix in plastic pot, it was taking over a week to completely dry. I overcompensated and switched it to a leca dominant mix in a shallow clay pot. Well... the plant has produced skinny and short new bulbs and just doesn't look that good.
A big reason for that is that my plant really needs to be watered every day maybe twice a day in warm temps, something that I don't have the time to easily do. Since that plant was my learning plant I applied my learnings from my failures to the new plants. I am judging my success by new root growth, and pseudobulb size. Bulbs should be plump and increase in size as the plant matures. In order to achieve that you need a solid foundation of roots adapted and established in the media/pot that best fits your conditions. Your plant isn't getting too soggy anymore with the potting change, but it might not be able to get as much water as it needs. If that isn't possible under your care regime, maybe add some more moisture retentive components to keep moisture at the roots while also allowing ample airflow. The trick to growing these plants well seems to be able to give them a lot of light and a lot of water without rotting their roots, a tricky feat in our home conditions. Take my answer with a grain of salt because I am not an expert but these are my experiences growing these plants over the past year.
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I thought some pictures of my plants with commentary would also be cool to share and also be an example of how to judge
C. walkeriana culture.
C. walkeriana coerulea #3
My starter division. You can see that the bulbs have not acheived the original mature size of the division, the leaves are not very turgid. This is due to inadequate root system (I rotted it) and being much drier than it wants since I put it in LECA in a pot. The roots are okay now, but the annoying thing is that it won't be really "established" until its outside of the pot. Growth habit is definitely a downside to this species.
C. walkeriana semi alba 'Tokyo No. 1' x tipo 'Goias'
I bought this division shortly after the coerulea because I had walkeriana fever. I had this in its original pot while I waited for new root growth until I could repot to the media and pot combo that fit my conditions. After my failures with the first division I knew that bark in plastic was no good, and leca in clay was also no good for me. I split the difference and applied an course mix in clay with inorganic aerating components. You can see the new growth was slightly under watered (curled leaf) but its basically the same size as previous growths and the leaf and bulb are turgid.
C. walkeriana tipo
I got this in the spring, I waited until root growth to repot into a clay pot with an airy bark mix. You can see that this seedling put out a huge, plump, fat new growth this year and some nice roots. I got the potting transition, and the watering, and air to the roots right and was rewarded for it. It's now pushing out another growth (or maybe a spike?!).
C. walkeriana albescens
There isn't much special here and the only new things that this plant has had since I got it are the two new roots it produced. I do want to show that not losing the root system is really important to these plants. I did not unpot, I simply slid the mesh pot it was in into the new pot and mix. The new growth is sending out new roots into the mix and establishing, but the old roots are still intact and somewhat healthy. If you compare this plant to the first plant I showed, you'll notice that the back bulbs are slightly desiccated but not in an extreme way. That's the difference between re-potting with an intact root system and without.
Another thing that I have picked up from Steven here on the board and on youtube is adding an inorganic layer at the bottom of the pot to increase air where the plant is likely to have the most stale moistness.