Why is this research hidden but still "active" in the research screen?

[Sixdd]

So in the screenshot, I'm working on a modpack and specifically the research tree. The problem is that the research between Vitals Monitor and Glitterworld Medicine is somehow invisible and can't be clicked on, but yet the Glitterworld Meds still points to it like it's there.



Here is the ResearchDef

Code Select Expand


<ResearchProjectDef>
<defName>NeuralImplants</defName>
<label>Nerve Staples</label>
<description>Allows the production of nerve staples from plasteel microcomponents.</description>
<baseCost>5000</baseCost>
<techLevel>Spacer</techLevel>
<prerequisites>
<li>VitalsMonitor</li>
<li>EnergizedComponents</li>
</prerequisites>
<requiredResearchBuilding>HiTechResearchBench</requiredResearchBuilding>
<requiredResearchFacilities>
<li>MultiAnalyzer</li>
</requiredResearchFacilities>
<tab>MedicalTech</tab>
<researchViewX>7</researchViewX>
<researchViewY>4</researchViewY>
</ResearchProjectDef>


Any ideas?