Faced just once. Some new files, which have been created in the current launch session and edited during this session after closing(open-close may be multiple times) don't open by clicking in the project files tree, other files opened normally. Fixed it only with "Just Restart".
Build #AI-211.7628.21.2111.8005941, built on December 16, 2021
Runtime version: 11.0.11+9-b60-7590822 amd64
VM: OpenJDK 64-Bit Server VM by Oracle Corporation
Windows 10 10.0
GC: G1 Young Generation, G1 Old Generation
Memory: 6192M
Cores: 12
Registry: external.system.auto.import.disabled=true, performance.watcher.sampling.interval.ms=2000, performance.watcher.unresponsive.interval.ms=10000, ide.tree.collapse.recursively=false
Non-Bundled Plugins: cn.haojiyou.CodeGlance3 (2.1.0), com.markskelton.one-dark-theme (5.4.2), dev.polek.adbwifi (1.2.4), indent-rainbow.indent-rainbow (1.7.0), krasa.CpuUsageIndicator (1.14), net.seesharpsoft.intellij.plugins.file-preview (1.6.4), org.jetbrains.kotlin (211-1.6.10-release-923-AS7442.40), com.mistamek.drawablepreview.drawable-preview (1.1.5), net.aquadc.mike.plugin (0.19), io.kanro.idea.plugin.protobuf (1.4.1)
Faced just once. Some new files, which have been created in the current launch session and edited during this session after closing(open-close may be multiple times) don't open by clicking in the project files tree, other files opened normally. Fixed it only with "Just Restart".