Section title after content - latex

Question

I am having a problem with an appendix title. I have a main.tex file, and several .tex files (one for each section) that are then included in the main.tex file through \input{namefile.tex} command.
However, the appendix section has a problem: the title of the appendix goes under the first three tables that are inside it (all the table contents are hidden):
The code of the main.tex file is as follows:
\documentclass[a4paper,fleqn]{cas-sc}
\UseRawInputEncoding
\usepackage[authoryear,longnamesfirst]{natbib}
% Needed for subfigures
\usepackage{subcaption}
% Needed for better tables
\usepackage{tabularx}
\newcolumntype{g}{X} % big column
\newcolumntype{s}{>{\hsize=.5\hsize}X} % small column
\newcolumntype{Y}{>{\centering\arraybackslash}X} % centered column in tabularx environment
\usepackage{enumitem}
%%%Author macros
\def\tsc#1{\csdef{#1}{\textsc{\lowercase{#1}}\xspace}}
\tsc{WGM}
\tsc{QE}
%%%
\begin{document}
\let\WriteBookmarks\relax
\def\floatpagepagefraction{1}
\def\textpagefraction{.001}
% Short title
\shorttitle{shorttitle}
% Short author
\shortauthors{anonymous}
% Main title of the paper
\title[mode=title]{maintitle}
% Address/affiliation
\affiliation[aff]{organization={org},
%addressline={},
city={city},
% citysep={}, % Uncomment if no comma needed between city and postcode
postcode={pk},
%state={st},
country={c}
}
% First author
%
% Options: Use if required
%\author[<aff no>]{<author name>}[<options>]
\author[aff]{anonymous}[type=editor]
% Corresponding author indication
\cormark[1]
% Footnote of the first author
%\fnmark[1]
% Email id of the author
\ead{mail}
% Corresponding author text
\cortext[1]{Corresponding author}
\begin{abstract}
Abstract
\end{abstract}
% Keywords
% Each keyword is separated by \sep
\begin{keywords}
kw1 \sep kw2
\end{keywords}
\maketitle
%*************************************************************
% Mainmatter
%*************************************************************
%\input{sections/01}
%\input{sections/02}
%\input{sections/03}
%\input{sections/04}
%% Loading bibliography style file
\bibliographystyle{cas-model2-names}
% Loading bibliography database
\bibliography{bibliography.bib}
\clearpage
%% The Appendices part is started with the command \appendix;
%% appendix sections are then done as normal sections
\appendix
\include{sections/appendix}
\end{document}
While the appendix.tex code is as follows (at the beginning):
\section{Tables and Numerical Results}
\label{app:tables-results}
% Number the appendix tables as A.1, A.2, ...
\setcounter{table}{0}
\renewcommand{\thetable}{A.\arabic{table}}
\begin{table}[ht]
\centering
\renewcommand{\arraystretch}{1.5}
\begin{tabularx}{\columnwidth}{XYY}
\hline
&&\\
\hline
&&\\
&&\\
&&\\
&&\\
&&\\
&&\\
&&\\
&&\\
&&\\
\hline
\end{tabularx}
\caption{caption}
\label{tab}
\end{table}
All the other tables are pretty much the same.
I have already tried in changing the [ht] option of the table, by using both [h] and [h!], but without any result.

Answer 1

The class you are using defines tables and figures in such a way that their default position is only at the top of the page. You can hack the code like this:
\documentclass[a4paper,fleqn,draft]{cas-sc}
\usepackage[authoryear,longnamesfirst]{natbib}
\ExplSyntaxOn
\cs_set:Npn \__reset_tbl:
{
\tl_set:Nx \l_tbl_pos_tl { h }
\tl_set:Nx \l_tbl_cols_tl { 1 }
\tl_set:Nn \l_tbl_align_tl { \centering }
\skip_set:Nn \l_tbl_abovecap_skip { 6pt }
\skip_set:Nn \l_tbl_belowcap_skip { 0pt }
\skip_set:Nn \l_tbl_abovetbl_skip { 6pt }
\skip_set:Nn \l_tbl_belowtbl_skip { 6pt }
}
\ExplSyntaxOff
\begin{document}
\section{Tables and Numerical Results}
\label{app:tables-results}
\begin{table}[htbp]
\caption{caption}
\label{tab}
\end{table}
text
\end{document}