emacs-29 3d87d74a23d: ; * etc/PROBLEMS: Entry about slow mouse-wheel with GTK3 (bug#70002).

[Eli Zaretskii]

branch: emacs-29
commit 3d87d74a23d13e853f202cc589eb750c40f9e2be
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    ; * etc/PROBLEMS: Entry about slow mouse-wheel with GTK3 (bug#70002).
---
 etc/PROBLEMS | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 642c3d0169e..16521e257dd 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -2069,6 +2069,16 @@ For such programs to function again, Emacs must be run 
on an X server
 where the input extension is disabled, or alternatively be configured
 with the "--without-xinput2" option.
 
+*** Scrolling with mouse-wheel lags in GTK3 builds.
+
+We don't know why this happens, but one workaround is to build Emacs
+with a different toolkit.  For example:
+
+  ./configure --without-toolkit-scroll-bars --with-x-toolkit=athena
+
+This produces a build which uses Athena toolkit, and disables toolkit
+scroll bars which could sometimes be slow.
+
 * Runtime problems on character terminals
 
 ** The meta key does not work on xterm.