Cannot open files from SFTP with other apps

Description

I tried to open a PDF file located on a SFTP server with 3 different apps, none of them did work. If I copy the file to internal storage there is no issue opening it.

Setting

Device: Samsung Galaxy J3 (SM-J320F)
OS: LineageOS 14.1
App version: 1.5.2 release

Log

08-31 21:22:49.876  1236  1628 I ActivityManager: START u0 {act=android.intent.action.VIEW dat=content://me.zhanghai.android.files.file_provider/sftp**************.pdf typ=application/pdf flg=0x3000003 cmp=com.artifex.mupdf.viewer.app/com.artifex.mupdf.viewer.DocumentActivity (has extras)} from uid 10070 on display 0
08-31 21:22:49.919  6657  6657 I MuPDF   : OPEN URI content://me.zhanghai.android.files.file_provider/sftp**************.pdf
08-31 21:22:49.919  6657  6657 I MuPDF   :   MAGIC (Intent) application/pdf
08-31 21:22:49.930  6731  6744 E DatabaseUtils: Writing exception to parcel
08-31 21:22:49.930  6731  6744 E DatabaseUtils: android.os.NetworkOnMainThreadException
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1303)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at java.net.SocketOutputStream.write(SocketOutputStream.java:157)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at zb.j.r(:13)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at ub.d$a.a(:19)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at ub.d.flush(:3)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at xb.r.m(:3)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at xb.r.f(:7)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at xb.r.a()
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at xb.r.l(:2)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at oa.b.k(:9)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at na.b.e()
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at na.b.l()
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at na.c.v()
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at d.b.I0(:2)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at d.b.a1()
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at me.zhanghai.android.files.file.FileProvider.query(:2)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at android.content.ContentProvider.query(ContentProvider.java:1022)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at android.content.ContentProvider$Transport.query(ContentProvider.java:240)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:112)
08-31 21:22:49.930  6731  6744 E DatabaseUtils: 	at android.os.Binder.execTransact(Binder.java:565)
08-31 21:22:49.932  6657  6657 I MuPDF   :   NAME null
08-31 21:22:49.932  6657  6657 I MuPDF   :   SIZE -1
08-31 21:22:49.932  6657  6657 I MuPDF   : Opening document content://me.zhanghai.android.files.file_provider/sftp**************.pdf
08-31 21:22:49.939  6731  6766 E JavaBinder: *** Uncaught remote exception!  (Exceptions are not yet supported across processes.)
08-31 21:22:49.939  6731  6766 E JavaBinder: java.lang.ArrayIndexOutOfBoundsException: length=256; index=-5
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at net.schmizz.sshj.common.Buffer.p()
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at zb.d.d(:4)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at zb.j.r(:10)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at ub.d$a.a(:19)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at ub.d.flush(:3)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at xb.r.m(:3)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at xb.r.f(:7)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at xb.r.a()
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at xb.p.e(:5)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at oa.b.d()
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at oa.b.e()
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at na.c.r(:20)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at me.zhanghai.android.files.file.FileProvider.openFile(:8)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at android.content.ContentProvider.openAssetFile(ContentProvider.java:1379)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at android.content.ContentProvider.openTypedAssetFile(ContentProvider.java:1559)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at android.content.ContentProvider.openTypedAssetFile(ContentProvider.java:1625)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at android.content.ContentProvider$Transport.openTypedAssetFile(ContentProvider.java:424)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:313)
08-31 21:22:49.939  6731  6766 E JavaBinder: 	at android.os.Binder.execTransact(Binder.java:565)
08-31 21:22:50.120  1236  1257 I ActivityManager: Displayed com.artifex.mupdf.viewer.app/com.artifex.mupdf.viewer.DocumentActivity: +222ms