IntelliJ IDEA can't show some code characters on a regular basis - intellij-idea

As you can see, in my IntelliJ IDEA, some code characters were hidden on the editor. After restarting the IDE, the problem will be solved occasionally. Why did it happen?
Issue:
IDE and OS:
IntelliJ IDEA 2017.1.2
Build #IU-171.4249.39, built on April 25, 2017
JRE: 1.8.0_112-release-736-b16 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.13.3
Note:
I've tried to switch IDE boot JDK to oracleJDK, it seems to solve the problem mentioned above, but some of the features of the IDE have failed :(

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Not able to view Dotty option while creating scala project in Intellij IDEA

I have Intellij IDEA. Below are the details about it.
IntelliJ IDEA 2017.2.5
Build #IU-172.4343.14, built on September 26, 2017
Licensed to Rajkumar Natrajan
JRE: 1.8.0_152-release-915-b12 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.12.6
I have latest scala plugin for IntelliJ installed as well.
But when I try to create the dotty project using the documentation here, I couldn't see the option. Below is the screen shot.
Do I miss any settings?
Choose SBT first, then on the next step you will be able to select Dotty:
Related ticket.

Can't compile a java 9 project in IntelliJ IDEA with module-info

Can't compile a java 9 project in IntelliJ IDEA with module-info.
Create a project
Add module
Create a class with with a main (without module-info.java it runs)
Add Module-info.java
Run Main Fails
Configuration
Module-info
module httpexample {
}
Error
Error:(1, 1) java: file should be on source path, or on patch path for module
Intellij Version
IntelliJ IDEA 2017.1.2
Build #IU-171.4249.39, built on April 25, 2017
JRE: 1.8.0_112-release-736-b16 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.11.1
It appears to be a new issue caused by Java 9 update 166, I've reported it in YouTrack, please follow for updates:
IDEA-172212 Compile Error under JDK9-167
I am using IntelliJ EAP 2017.2 build 1909.2 and this is not an issue anymore
I have installed IntelliJ 2017.2 EAP and JDK 9 build 169 and opened my module system projects and it works fine, now my system info is:
IntelliJ IDEA 2017.2 EAP
Build #IU-172.2103.15, built on May 12, 2017
IntelliJ IDEA EAP User
Expiration date: June 11, 2017
JRE: 1.8.0_152-release-845-b3 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.12.4

IntelliJ IDEA: How to disable "Code Generation"?

I'd like to know how can I disable "Code Generation" message which keeps on showing as I type code. My auto completion lags a bit so I'd like to experiment a
little to see if disabling it will speed up my IDE.
IDE Info:
IntelliJ IDEA 2016.2
Build #IC-162.1121.32, built on July 9, 2016
JRE: 1.8.0_45-b14 amd64
JVM: Java HotSpot(TM) 64-Bit Server VM by Oracle Corporation
Regards,
Ezekiel

Weird gap in front of cursor in PhpStorm

I am getting a weird gap in my PhpStorm installation as displayed in the GIF. I have another installation for IntelliJ and it also mimics the same behaviour.
I'm on OS X El Capitan and the PhpStorm version is as below:
PhpStorm 2016.1.2
Build #PS-145.1616, built on May 24, 2016
JRE: 1.8.0_76-release-b198 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Yeah, I used to have the same problem. I had the exact same settings on another computer with a larger screen, and that one works fine. Then I just simply change the font-size to be smaller, better to be even number, Now it works fine again. Not sure if this is the solution, but you can try it.

Analysis error, but compilation successful

My compilation (gradle compileJava is successful). Even Build->Make Project does not show any errors. However there is one Java file, which is showing an Analysis error 1 Error found and I get the below error in the balloon message.
Ambiguous method call. Both
apply(SpringSocialConfigurer) in AbstractConfiguredSecurityBuilder and
apply(SpringSocialConfigurer) in AbstractConfiguredSecurityBuilder match
My IntelliJ version and other details below
IntelliJ IDEA (Community Edition) IC-144.4199.23
Build #IC-144.4199, built on February 19, 2016
JRE: 1.8.0_40-release-b132 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
I had the same issue. Upgrading to newest version of IDEA solved the problem.
I have now Idea Community Edition, build: IC-145.597.3, and this is fixed.