When I open multiple projects, except for the first one, all other projects get stuck for a long time

 When I rolled back the copilot plugin to the previous version, it seemed to work fine

Since the problem is not reproducible after rolling back GitHub Copilot plugin I'd recommend to raise this issue at https://support.github.com

Related freeze thread dump:

AWT-EventQueue-0" prio=0 tid=0x0 nid=0x0 runnable
     java.lang.Thread.State: RUNNABLE
 (in native)
	at java.base@17.0.10/sun.nio.ch.Net.connect0(Native Method)
	at java.base@17.0.10/sun.nio.ch.Net.connect(Net.java:579)
	at java.base@17.0.10/sun.nio.ch.Net.connect(Net.java:568)
	at java.base@17.0.10/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
	at java.base@17.0.10/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
	at java.base@17.0.10/java.net.Socket.connect(Socket.java:633)
	at java.base@17.0.10/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:304)
	at java.base@17.0.10/sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:174)
	at java.base@17.0.10/sun.net.NetworkClient.doConnect(NetworkClient.java:183)
	at java.base@17.0.10/sun.net.www.http.HttpClient.openServer(HttpClient.java:533)
	at java.base@17.0.10/sun.net.www.http.HttpClient.openServer(HttpClient.java:638)
	at java.base@17.0.10/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:266)
	at java.base@17.0.10/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:380)
	at java.base@17.0.10/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:193)
	at java.base@17.0.10/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1242)
	at java.base@17.0.10/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1128)
	at java.base@17.0.10/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:179)
	at java.base@17.0.10/sun.net.www.protocol.http.HttpURLConnection.followRedirect0(HttpURLConnection.java:2922)
	at java.base@17.0.10/sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2831)
	at java.base@17.0.10/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1927)
	at java.base@17.0.10/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1589)
	at java.base@17.0.10/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:224)
	at java.base@17.0.10/java.net.URL.openStream(URL.java:1161)
	at java.desktop/javax.imageio.ImageIO.read(ImageIO.java:1407)
	at com.github.copilot.chat.formatting.GitHubUserPicture.forUser(GitHubUserPicture.kt:18)
	at com.github.copilot.chat.message.GitHubUser.<init>(GitHubUser.kt:16)
	at com.github.copilot.status.CopilotAuthStatusKt.toCopilotStatus(CopilotAuthStatus.kt:87)
	at com.github.copilot.status.CopilotAuthStatusKt.subscribeToCopilotAuthStatus(CopilotAuthStatus.kt:26)
	at com.github.copilot.chat.window.CopilotChatToolWindow.initCopilotStatusListener(CopilotChatToolWindow.kt:89)

Looks like it happens when GitHub Copilot plugin tries to load some image and freezes due to slow I/O operations

If you have a proxy on your machine ensure it is properly configured as per https://www.jetbrains.com/help/idea/settings-http-proxy.html